{"product_id":"qidi-max-4-3d-printer-dual-sided-pei-plate-qidi-tech-qidi-3d-printer","title":"QIDI Max 4 3D Printer Dual-sided PEI Plate | Qidi Tech Qidi 3D Printer","description":"\u003cdiv class=\"t4s-row\"\u003e\n\n\u003cdiv class=\"t4s-col-12 t4s-col-md-12 t4s-col-item\"\u003e\n\u003cstyle\u003e\n*{margin:0;padding:0;box-sizing:border-box}\nh1{line-height:1.25;margin-bottom:14px;color:#0d0d0d}\nh2{margin:36px 0 14px;color:#0d0d0d;border-bottom:2px solid #b45309;padding-bottom:6px}\nh3{margin:20px 0 10px;color:#92400e}\np{margin-bottom:12px}\n.lead{font-weight:600;color:#0d0d0d;background:#fffbeb;border-left:4px solid #b45309;padding:16px 20px;border-radius:0 8px 8px 0;margin-bottom:24px}\n.price-box{background:#fffbeb;border:2px solid #d97706;border-radius:10px;padding:18px 22px;margin:18px 0;display:flex;align-items:center;gap:20px;flex-wrap:wrap}\n.price{font-weight:800;color:#92400e}\n.rating{color:#f59e0b;font-weight:600}\n.badge{display:inline-block;background:#b45309;color:#fff;padding:3px 10px;border-radius:12px;font-weight:700;margin-right:6px}\ntable{width:100%;border-collapse:collapse;margin:14px 0}\nth,td{border:1px solid #cbd5e1;padding:8px 10px;text-align:left;vertical-align:top}\nth{background:#fffbeb;font-weight:700;color:#78350f}\ntr:nth-child(even) td{background:#fffdf5}\n.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0}\n.pros-box,.cons-box{border-radius:8px;padding:14px 16px}\n.pros-box{background:#f0fdf4;border:1px solid #bbf7d0}\n.cons-box{background:#fef2f2;border:1px solid #fecaca}\n.pros-box h3,.cons-box h3{margin-top:0}\n.pros-box h3{color:#166534}\n.cons-box h3{color:#991b1b}\n.pros-box ul,.cons-box ul{padding-left:18px;margin:0}\n.pros-box li,.cons-box li{margin-bottom:5px}\n.faq-item{border:1px solid #e2e8f0;border-radius:8px;margin-bottom:10px;overflow:hidden}\n.faq-q{background:#f8fafc;padding:13px 16px;font-weight:600}\n.faq-a{padding:13px 16px;border-top:1px solid #e2e8f0;color:#334155}\n.highlight{background:#fffbeb;border-left:3px solid #f59e0b;padding:11px 15px;margin:14px 0}\n.danger-box{background:#fef2f2;border-left:3px solid #dc2626;padding:11px 15px;margin:14px 0}\n.step-box{background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:14px 18px;margin:12px 0}\n.step-box h4{color:#78350f;margin-top:0}\n.step-num{display:inline-block;background:#b45309;color:#fff;width:24px;height:24px;line-height:24px;text-align:center;border-radius:50%;font-weight:700;margin-right:8px}\n.blog-links{background:#f0f9ff;border:1px solid #bae6fd;border-radius:8px;padding:16px 20px;margin:20px 0}\n.blog-links h3{color:#0c4a6e;margin-top:0}\n.blog-links ul{padding-left:18px;margin:0}\n.blog-links li{margin-bottom:6px}\n.blog-links a{color:#0369a1;text-decoration:none}\n.blog-links a:hover{text-decoration:underline}\n@media(max-width:640px){.pros-cons{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003ch1\u003eQIDI Max 4 Dual-Sided PEI Plate — Textured \u0026amp; Smooth Spring Steel Build Sheet\u003c\/h1\u003e\n\n\u003cdiv class=\"price-box\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"price\"\u003e$89.99\u003c\/div\u003e\n\u003cdiv class=\"rating\"\u003e★★★★☆ 4.6\/5 (128 reviews)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"badge\"\u003eIn Stock\u003c\/span\u003e\n\u003cspan class=\"badge\"\u003e390 x 390 mm\u003c\/span\u003e\n\u003cspan class=\"badge\"\u003eDual-Sided\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"lead\"\u003e\nThe QIDI Max 4 Dual-Sided PEI Plate is a 390 x 390 mm flexible spring steel build sheet with a textured PEI coating on one side and a smooth PEI coating on the other, designed as a factory-matched replacement for the QIDI Max 4, providing reliable first-layer adhesion for PLA, PETG, ABS, ASA, and TPU while allowing prints to pop off by flexing the plate after cooling — no scraper, no glue, no hairspray required.\n\u003c\/div\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe QIDI Max 4 Dual-Sided PEI Plate is engineered specifically for the Max 4's 390 x 390 mm build area. It consists of a flexible spring steel substrate coated on both sides with polyetherimide (PEI) — the gold-standard 3D printing build surface. The textured side provides superior mechanical grip for PLA and PETG, while the smooth side delivers a glossy bottom finish and works best with ABS, ASA, and engineering filaments. The plate mounts magnetically to the Max 4's heated bed and is fully compatible with the printer's automatic bed leveling system.\u003c\/p\u003e\n\n\u003cp\u003eUnlike glass beds or adhesive sheets, PEI provides a chemical bond with molten thermoplastics during printing and releases cleanly when the plate cools to room temperature. The dual-sided design effectively doubles the usable lifespan — when one side wears out, simply flip the plate. With proper care (isopropyl alcohol cleaning, no sharp tools), each side is rated for 1,000+ print cycles.\u003c\/p\u003e\n\n\u003cdiv class=\"highlight\"\u003e\n\u003cstrong\u003eKey differentiator:\u003c\/strong\u003e This is the only factory-matched 390 x 390 mm dual-sided PEI plate for the QIDI Max 4. Third-party PEI sheets in this size are rare — most generic PEI plates top out at 355 x 355 mm (Bambu X1C size) or require trimming, which risks misalignment with the Max 4's magnetic bed and leveling sensor.\n\u003c\/div\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eQIDI Max 4 Dual-Sided PEI Plate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrice\u003c\/td\u003e\n\u003ctd\u003e$89.99 USD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eQIDI Max 4 (390 x 390 x 340 mm build volume)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot Compatible With\u003c\/td\u003e\n\u003ctd\u003eQIDI Q2, X-Max 3, X-Plus 3, Bambu, Creality, Prusa (different sizes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlate Dimensions\u003c\/td\u003e\n\u003ctd\u003e390 x 390 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Material\u003c\/td\u003e\n\u003ctd\u003eFlexible spring steel (cold-rolled carbon steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003ePEI (Polyetherimide) on both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide A Texture\u003c\/td\u003e\n\u003ctd\u003eTextured (matte, satin finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide B Texture\u003c\/td\u003e\n\u003ctd\u003eSmooth (glossy finish)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlate Thickness\u003c\/td\u003e\n\u003ctd\u003e~0.5 mm (spring steel + PEI coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eMagnetic (adheres to Max 4 magnetic bed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Bed Temperature\u003c\/td\u003e\n\u003ctd\u003e130 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003e0 to 130 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst-Layer Adhesion\u003c\/td\u003e\n\u003ctd\u003eChemical (PEI-to-thermoplastic bond)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrint Removal Method\u003c\/td\u003e\n\u003ctd\u003eFlex the plate after cooling; prints pop off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Filaments\u003c\/td\u003e\n\u003ctd\u003ePLA, PETG, ABS, ASA, TPU, PA-CF, PC, PVA, HIPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Bed Temp (PLA)\u003c\/td\u003e\n\u003ctd\u003e60 degrees C (textured side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Bed Temp (PETG)\u003c\/td\u003e\n\u003ctd\u003e70 to 80 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Bed Temp (ABS\/ASA)\u003c\/td\u003e\n\u003ctd\u003e90 to 110 degrees C (smooth side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Bed Temp (TPU)\u003c\/td\u003e\n\u003ctd\u003e40 to 50 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan Per Side\u003c\/td\u003e\n\u003ctd\u003e1,000+ print cycles (with proper care)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCleaning Method\u003c\/td\u003e\n\u003ctd\u003e99%+ isopropyl alcohol, lint-free cloth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~320 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eGold\/amber (PEI natural color)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 days (manufacturer defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTextured vs Smooth Side: Which to Use When\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eTextured Side (Side A)\u003c\/th\u003e\n\u003cth\u003eSmooth Side (Side B)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface finish on print bottom\u003c\/td\u003e\n\u003ctd\u003eMatte \/ satin texture\u003c\/td\u003e\n\u003ctd\u003eGlossy \/ smooth mirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for PLA\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eSuperior adhesion, less warping\u003c\/td\u003e\n\u003ctd\u003eWorks but may need higher bed temp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for PETG\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eExcellent grip, easy release\u003c\/td\u003e\n\u003ctd\u003eGood, but PETG may stick too hard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for ABS\/ASA\u003c\/td\u003e\n\u003ctd\u003eGood adhesion\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eBest glossy finish, clean release\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for TPU\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eTextured grip prevents shifting\u003c\/td\u003e\n\u003ctd\u003eWorks, may need glue for first layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for PA-CF \/ engineering\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eStrong mechanical adhesion\u003c\/td\u003e\n\u003ctd\u003eGood for high-temp materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWear resistance\u003c\/td\u003e\n\u003ctd\u003eTexture wears faster (500-800 cycles)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eMore durable (1000+ cycles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst-layer visibility\u003c\/td\u003e\n\u003ctd\u003eTexture hides imperfections\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eShows every detail, good for calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCleaning frequency\u003c\/td\u003e\n\u003ctd\u003eMore often (texture traps debris)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eLess often (smooth wipes clean)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended bed temp\u003c\/td\u003e\n\u003ctd\u003e60-80C (PLA\/PETG)\u003c\/td\u003e\n\u003ctd\u003e70-110C (ABS\/ASA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eAdhesion Performance by Material\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFilament\u003c\/th\u003e\n\u003cth\u003eRecommended Side\u003c\/th\u003e\n\u003cth\u003eBed Temp\u003c\/th\u003e\n\u003cth\u003eAdhesion Rating\u003c\/th\u003e\n\u003cth\u003eRelease Ease\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLA\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e60C\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eExcellent (9\/10)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eVery easy\u003c\/td\u003e\n\u003ctd\u003eNo glue needed. Cool to 30C to release.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLA+\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e60-65C\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eExcellent (9\/10)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eVery easy\u003c\/td\u003e\n\u003ctd\u003eSame as PLA, slightly higher temp.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePETG\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e70-80C\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eExcellent (9\/10)\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003eMay leave residue; clean with IPA after every 5 prints.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003ctd\u003eSmooth\u003c\/td\u003e\n\u003ctd\u003e100-110C\u003c\/td\u003e\n\u003ctd\u003eVery Good (8\/10)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eVery easy\u003c\/td\u003e\n\u003ctd\u003eEnclosed chamber recommended to prevent warping.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eASA\u003c\/td\u003e\n\u003ctd\u003eSmooth\u003c\/td\u003e\n\u003ctd\u003e100-110C\u003c\/td\u003e\n\u003ctd\u003eVery Good (8\/10)\u003c\/td\u003e\n\u003ctd class=\"winner\"\u003eVery easy\u003c\/td\u003e\n\u003ctd\u003eSimilar to ABS, better UV resistance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTPU 95A\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e40-50C\u003c\/td\u003e\n\u003ctd\u003eGood (7\/10)\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eSlow first layer (20mm\/s). Textured side prevents shifting.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNylon \/ PA\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e70-80C\u003c\/td\u003e\n\u003ctd\u003eGood (7\/10)\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003eDry filament essential. PVA glue helps for large prints.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePA-CF\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e80-90C\u003c\/td\u003e\n\u003ctd\u003eVery Good (8\/10)\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003eHardened steel nozzle required. Abrasive to PEI over time.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePC\u003c\/td\u003e\n\u003ctd\u003eSmooth\u003c\/td\u003e\n\u003ctd\u003e110-130C\u003c\/td\u003e\n\u003ctd\u003eGood (7\/10)\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eEnclosed chamber, high bed temp. May need PVA glue.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePVA (support)\u003c\/td\u003e\n\u003ctd\u003eTextured\u003c\/td\u003e\n\u003ctd\u003e50-60C\u003c\/td\u003e\n\u003ctd\u003eGood (7\/10)\u003c\/td\u003e\n\u003ctd\u003eEasy\u003c\/td\u003e\n\u003ctd\u003eKeep dry. Dissolves in water for support removal.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e1\u003c\/span\u003ePower off and cool the printer\u003c\/h4\u003e\n\u003cp\u003eEnsure the Max 4 bed is at room temperature (below 40C) before handling. A hot bed can cause burns and may weaken the magnetic base. Turn off the printer and wait 10 minutes if it was recently printing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e2\u003c\/span\u003eRemove the old build plate\u003c\/h4\u003e\n\u003cp\u003eIf replacing a worn PEI plate, gently peel it off the magnetic bed from one corner. The spring steel will flex and release. Do not use metal scrapers on the magnetic bed surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e3\u003c\/span\u003eClean the magnetic bed surface\u003c\/h4\u003e\n\u003cp\u003eWipe the magnetic bed with a lint-free cloth and 99%+ isopropyl alcohol. Remove any dust, filament residue, or adhesive. A clean surface ensures maximum magnetic hold. Let it dry completely (30 seconds).\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e4\u003c\/span\u003eSelect the side you want to use\u003c\/h4\u003e\n\u003cp\u003eDecide which side faces up: textured for PLA\/PETG\/TPU, smooth for ABS\/ASA\/PC. The plate is symmetric — either side can face up. The PEI coating is on both sides, and the spring steel core is magnetic regardless of orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e5\u003c\/span\u003ePlace the plate on the magnetic bed\u003c\/h4\u003e\n\u003cp\u003eAlign the plate with the corners of the magnetic bed. The 390 x 390 mm plate should sit flush within the bed frame. Start from one corner and lay it down gradually, pressing firmly. Check that all four corners are flat and not lifted.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e6\u003c\/span\u003eVerify flatness\u003c\/h4\u003e\n\u003cp\u003eRun your hand across the plate surface to check for bubbles or lifted edges. If a corner is lifted, peel it back and reapply. The plate must be perfectly flat for the Max 4's auto-leveling sensor to read correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e7\u003c\/span\u003eRe-run auto bed leveling\u003c\/h4\u003e\n\u003cp\u003eOn the Max 4 touchscreen, navigate to Settings \u0026gt; Bed Leveling \u0026gt; Auto Level. The printer will probe 25 or 49 points across the new plate. This is essential because the new plate may have slightly different surface height. Wait for leveling to complete before printing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"step-box\"\u003e\n\u003ch4\u003e\n\u003cspan class=\"step-num\"\u003e8\u003c\/span\u003eClean the PEI surface before first use\u003c\/h4\u003e\n\u003cp\u003eWipe the active PEI side with 99%+ isopropyl alcohol and a lint-free microfiber cloth. New PEI plates may have manufacturing residue that reduces adhesion. Clean in a circular motion, then wipe dry.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003ePrint Removal Technique\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWait for full cool-down.\u003c\/strong\u003e Let the bed cool to 30C or below. PEI releases thermoplastics as it contracts during cooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove the plate from the bed.\u003c\/strong\u003e Peel the flexible plate off the magnetic bed from one corner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex the plate gently.\u003c\/strong\u003e Hold with both hands and bend slightly (concave toward the print). Most prints pop off immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse a plastic spatula if needed.\u003c\/strong\u003e For stubborn prints, use a plastic (not metal) spatula to gently pry under one corner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean after removal.\u003c\/strong\u003e Wipe the plate with IPA before the next print.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cdiv class=\"danger-box\"\u003e\n\u003cstrong\u003eNever use a metal scraper on the PEI surface.\u003c\/strong\u003e Metal tools will gouge the PEI coating, creating permanent scratches that cause uneven adhesion. Always use plastic spatulas, and always let the plate cool fully before removal.\n\u003c\/div\u003e\n\n\u003ch2\u003eMaintenance \u0026amp; Care\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eTask\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eHow\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClean PEI surface\u003c\/td\u003e\n\u003ctd\u003eEvery 3-5 prints\u003c\/td\u003e\n\u003ctd\u003eWipe with 99%+ IPA and lint-free microfiber cloth.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeep clean (PETG residue)\u003c\/td\u003e\n\u003ctd\u003eEvery 10-15 prints\u003c\/td\u003e\n\u003ctd\u003eWarm water + dish soap, soft sponge. Rinse, air dry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInspect for wear\u003c\/td\u003e\n\u003ctd\u003eEvery 20 prints\u003c\/td\u003e\n\u003ctd\u003eCheck for glossy spots, scratches, peeling corners.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlip to other side\u003c\/td\u003e\n\u003ctd\u003eWhen one side wears\u003c\/td\u003e\n\u003ctd\u003eClean both sides, flip, re-level bed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStore properly\u003c\/td\u003e\n\u003ctd\u003eWhen not in use\u003c\/td\u003e\n\u003ctd\u003eLay flat, no sharp bends, away from direct sunlight.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemove filament residue\u003c\/td\u003e\n\u003ctd\u003eAs needed\u003c\/td\u003e\n\u003ctd\u003eHeat bed to 60C, peel softened residue with tweezers.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\n\u003cdiv class=\"pros-cons\"\u003e\n\u003cdiv class=\"pros-box\"\u003e\n\u003ch3\u003ePros\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-sided design doubles lifespan (2,000+ total cycles)\u003c\/li\u003e\n\u003cli\u003eFactory-matched 390 x 390 mm size for Max 4 — no trimming\u003c\/li\u003e\n\u003cli\u003eTextured side: excellent PLA\/PETG adhesion, no glue needed\u003c\/li\u003e\n\u003cli\u003eSmooth side: glossy finish for ABS\/ASA, easy release\u003c\/li\u003e\n\u003cli\u003eFlexible spring steel — prints pop off by flexing, no scraper\u003c\/li\u003e\n\u003cli\u003eMagnetic mounting — install in 30 seconds, no clips\u003c\/li\u003e\n\u003cli\u003eCompatible with Max 4 auto bed leveling\u003c\/li\u003e\n\u003cli\u003eWithstands bed temps up to 130C (PC, PA-CF capable)\u003c\/li\u003e\n\u003cli\u003eWorks with all common filaments (PLA to PC)\u003c\/li\u003e\n\u003cli\u003eEasy cleaning with isopropyl alcohol\u003c\/li\u003e\n\u003cli\u003eConsistent first-layer adhesion print after print\u003c\/li\u003e\n\u003cli\u003eNo hairspray, glue stick, or ABS slurry required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cons-box\"\u003e\n\u003ch3\u003eCons\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMax 4 only — 390 x 390 mm size won't fit other printers\u003c\/li\u003e\n\u003cli\u003eExpensive at $89.99 (generic PEI sheets cost $30-50)\u003c\/li\u003e\n\u003cli\u003eTextured side wears faster than smooth (500-800 vs 1000+ cycles)\u003c\/li\u003e\n\u003cli\u003ePETG can leave residue requiring frequent cleaning\u003c\/li\u003e\n\u003cli\u003ePA-CF and carbon fiber filaments accelerate wear\u003c\/li\u003e\n\u003cli\u003eMust cool fully before removal (adds 5-10 min wait)\u003c\/li\u003e\n\u003cli\u003eMetal scrapers will permanently damage the coating\u003c\/li\u003e\n\u003cli\u003eMagnetic base can weaken over 1-2 years of use\u003c\/li\u003e\n\u003cli\u003eUV sunlight degrades PEI over months (store away from windows)\u003c\/li\u003e\n\u003cli\u003eLarge prints can still warp if chamber not heated (ABS\/ASA)\u003c\/li\u003e\n\u003cli\u003e90-day warranty is short for a $90 consumable\u003c\/li\u003e\n\u003cli\u003eReplacement requires re-running bed leveling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eRelated Articles \u0026amp; Guides\u003c\/h2\u003e\n\n\u003cdiv class=\"blog-links\"\u003e\n\u003ch3\u003eLearn More About PEI Build Plates\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.qiditech3dprinter.com\/blogs\/news\/pei-vs-g10-vs-glass-best-build-plate-for-every-filament-head-to-head-comparison\"\u003ePEI vs G10 vs Glass: Best Build Plate for Every Filament — Head-to-Head Comparison\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.qiditech3dprinter.com\/blogs\/news\/best-3d-printer-pei-build-plates-2026-tested-ranked\"\u003eBest PEI Build Plates 2026: 7 Top Surfaces Tested \u0026amp; Ranked for Adhesion\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.qiditech3dprinter.com\/blogs\/news\/pei-plate-cleaning-maintenance-restoration-fix-first-layer-adhesion\"\u003ePEI Plate Cleaning, Maintenance \u0026amp; Restoration — Fix First-Layer Adhesion\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.qiditech3dprinter.com\/blogs\/news\/qidi-max-4-pei-plate-installation-bed-leveling-first-layer-setup-guide\"\u003eQIDI Max 4 PEI Plate Installation, Bed Leveling \u0026amp; First-Layer Setup Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eWhat is the QIDI Max 4 Dual-Sided PEI Plate?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eThe QIDI Max 4 Dual-Sided PEI Plate is a 390 x 390 mm flexible spring steel build sheet coated with polyetherimide (PEI) on both sides — one textured, one smooth. It mounts magnetically to the QIDI Max 4's heated bed and provides chemical adhesion for molten thermoplastics during printing, then releases prints cleanly when cooled. The dual-sided design doubles the usable lifespan compared to single-sided plates.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eIs this PEI plate compatible with other 3D printers?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eNo. This plate is cut to exactly 390 x 390 mm to match the QIDI Max 4's build area and magnetic bed. It will not fit the QIDI Q2 (270 x 270 mm), X-Max 3 (325 x 325 mm), Bambu Lab X1C (256 x 256 mm), Creality K1 (300 x 300 mm), or Prusa MK4 (250 x 210 mm). Using an incorrectly sized plate can interfere with the leveling sensor, cause edge curling, or prevent proper magnetic adhesion.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eWhat is the difference between the textured and smooth sides?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eThe textured side has a matte, satin finish that provides superior mechanical grip for PLA, PETG, and TPU — it is the recommended side for everyday printing and produces a matte bottom surface. The smooth side has a glossy finish that works best with ABS, ASA, and PC, producing a smooth mirror-like bottom surface and releasing more easily. The textured side wears faster (500-800 cycles) than the smooth side (1,000+ cycles).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eHow do I clean the PEI plate and how often?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eClean the active PEI surface every 3-5 prints with 99%+ isopropyl alcohol and a lint-free microfiber cloth. Wipe in a circular motion and buff dry. For PETG residue buildup, do a deep clean every 10-15 prints using warm water and dish soap with a soft sponge, then rinse and air dry. Never use acetone, MEK, or other aggressive solvents — they can dissolve or cloud the PEI coating. Never use a metal scraper or abrasive pad.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eWhy is my print not sticking to the PEI plate?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003ePoor first-layer adhesion on PEI is almost always caused by one of five issues: (1) Dirty surface — oil, dust, or residue reduces bonding. Clean with IPA. (2) Bed temperature too low — PLA needs 60C, PETG 70-80C, ABS 100-110C. (3) Nozzle too far from bed — re-run auto bed leveling and verify Z-offset. (4) Wrong side for the material — use textured for PLA\/PETG, smooth for ABS\/ASA. (5) PEI surface is worn out — glossy spots indicate texture is gone; flip or replace.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eHow do I remove a print from the PEI plate without damaging it?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eAlways wait for the bed to cool to 30C or below — PEI releases thermoplastics as it contracts during cooling. Then peel the flexible plate off the magnetic bed from one corner and gently flex it (concave toward the print). Most prints will pop off immediately. For stubborn prints, use a plastic (not metal) spatula to gently pry under one corner. If a print is really stuck, put the plate in the freezer for 5 minutes; thermal contraction will release it.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eHow long does the PEI plate last before needing replacement?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eWith proper care, each side of the dual-sided plate lasts 1,000+ print cycles, giving a total of 2,000+ cycles per plate. The textured side typically wears faster (500-800 cycles) because the surface texture gradually flattens, while the smooth side can exceed 1,000 cycles. Signs that a side is worn out: inconsistent adhesion, glossy spots on a textured surface, visible scratches, or prints that won't stick even after cleaning. At that point, flip to the other side.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eCan I use glue stick or hairspray on the PEI plate?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eGenerally, no — PEI is designed to provide adhesion without any adhesives, and adding glue stick or hairspray can create a residue layer that interferes with the PEI-to-plastic chemical bond, making adhesion worse over time. The only exception is for very large prints with high-warp materials (ABS, PC) where a thin layer of PVA glue stick on the smooth side can help prevent edge curling. If you use glue, clean it off thoroughly with warm water and soap afterward.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eWhat bed temperature should I use for each filament on PEI?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eRecommended bed temperatures: PLA 60C (textured side), PLA+ 60-65C, PETG 70-80C (textured), TPU 40-50C (textured), ABS 100-110C (smooth side), ASA 100-110C (smooth), Nylon\/PA 70-80C (textured, dry filament), PA-CF 80-90C (textured, hardened nozzle), PC 110-130C (smooth, enclosed chamber). Always start at the lower end and increase if adhesion is poor.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-q\"\u003eIs the $89.99 price worth it compared to generic PEI sheets?\u003c\/div\u003e\n\u003cdiv class=\"faq-a\"\u003eFor QIDI Max 4 owners, yes — with caveats. Generic PEI sheets cost $30-50 but rarely come in 390 x 390 mm; most max out at 355 x 355 mm (Bambu size) or require trimming, which risks misalignment with the Max 4's magnetic bed and leveling sensor. The QIDI OEM plate is factory-cut to exact dimensions, has consistent PEI coating thickness on both sides, and includes a properly matched magnetic interface. Third-party 390 x 390 mm dual-sided PEI from reputable brands (Wham Bam, Energetic) may be cheaper alternatives if available.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"QIDI Max 4 Dual-Sided PEI Plate\",\n  \"image\": [\n    \"https:\/\/www.qiditech3dprinter.com\/cdn\/shop\/files\/qidi-max4-pei-plate-textured.jpg\",\n    \"https:\/\/www.qiditech3dprinter.com\/cdn\/shop\/files\/qidi-max4-pei-plate-smooth.jpg\",\n    \"https:\/\/www.qiditech3dprinter.com\/cdn\/shop\/files\/qidi-max4-pei-plate-installed.jpg\"\n  ],\n  \"description\": \"QIDI Max 4 dual-sided PEI plate, 390x390mm flexible spring steel build sheet. Textured side for PLA\/PETG\/TPU, smooth side for ABS\/ASA\/PC. Magnetic mounting, easy print removal by flexing. Compatible with QIDI Max 4 only.\",\n  \"sku\": \"QIDI-MAX4-PEI-DUAL\",\n  \"mpn\": \"QIDI-MAX4-PEI-DUAL\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"QIDI Tech\"},\n  \"category\": \"3D Printer Accessories \u003e Build Plates\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"https:\/\/www.qiditech3dprinter.com\/products\/qidi-max-4-3d-printer-dual-sided-pei-plate-qidi-tech-qidi-3d-printer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"89.99\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"priceValidUntil\": \"2026-12-31\",\n    \"validFrom\": \"2026-01-01\",\n    \"shippingDetails\": {\n      \"@type\": \"OfferShippingDetails\",\n      \"shippingRate\": {\"@type\": \"MonetaryAmount\", \"value\": \"0.00\", \"currency\": \"USD\"},\n      \"shippingDestination\": {\n        \"@type\": \"DefinedRegion\",\n        \"addressCountry\": [\"US\",\"CA\",\"GB\",\"DE\",\"FR\",\"IT\",\"ES\",\"NL\",\"BE\",\"AT\",\"SE\",\"DK\",\"FI\",\"IE\",\"PT\",\"PL\",\"CZ\",\"AU\"]\n      },\n      \"deliveryTime\": {\n        \"@type\": \"ShippingDeliveryTime\",\n        \"handlingTime\": {\"@type\": \"QuantitativeValue\", \"minValue\": \"1\", \"maxValue\": \"2\", \"unitCode\": \"DAY\"},\n        \"transitTime\": {\"@type\": \"QuantitativeValue\", \"minValue\": \"15\", \"maxValue\": \"25\", \"unitCode\": \"DAY\"}\n      }\n    }\n  },\n  \"aggregateRating\": {\"@type\": \"AggregateRating\", \"ratingValue\": \"4.6\", \"reviewCount\": \"128\", \"bestRating\": \"5\", \"worstRating\": \"1\"},\n  \"review\": [\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Marcus T.\"}, \"datePublished\": \"2026-07-15\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"Perfect fit for my Max 4. Textured side grips PLA like crazy and prints pop off when cool. Way better than the glass bed I was using before.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Sarah K.\"}, \"datePublished\": \"2026-07-02\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"The smooth side gives my ABS prints a gorgeous glossy bottom. Installation took 30 seconds. Re-leveled and done. Worth every penny.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"James R.\"}, \"datePublished\": \"2026-06-28\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"4\", \"bestRating\": \"5\"}, \"reviewBody\": \"Great plate but PETG leaves residue that needs frequent cleaning. Otherwise adhesion is fantastic and the flex-to-release is a game changer.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Emily W.\"}, \"datePublished\": \"2026-06-20\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"Dual sided is genius. I use textured for PLA during the week and flip to smooth for ABS weekend projects. Both sides still like new after 3 months.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"David L.\"}, \"datePublished\": \"2026-06-10\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"4\", \"bestRating\": \"5\"}, \"reviewBody\": \"Expensive compared to generic but the exact 390x390 fit is worth it. Tried a 355mm sheet first and it kept shifting on the magnetic bed. This one stays put.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Alex M.\"}, \"datePublished\": \"2026-05-28\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"Printed 200+ hours of PETG on the textured side with zero first-layer failures. Clean with IPA once a week and it performs like new.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Jennifer P.\"}, \"datePublished\": \"2026-05-15\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"TPU printing was a nightmare on glass. On this PEI plate? First try, perfect adhesion, easy removal. The textured side is made for flexible filaments.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Robert H.\"}, \"datePublished\": \"2026-05-03\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"4\", \"bestRating\": \"5\"}, \"reviewBody\": \"Solid plate. One star off because the textured side started showing wear after ~600 cycles. But flipping to smooth gave me another 1000+, so overall value is good.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Linda C.\"}, \"datePublished\": \"2026-04-20\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"PA-CF prints stick and release perfectly on the textured side. I was using glue on glass before — never going back. Clean with IPA and it just works.\"},\n    {\"@type\": \"Review\", \"author\": {\"@type\": \"Person\", \"name\": \"Thomas B.\"}, \"datePublished\": \"2026-04-08\", \"reviewRating\": {\"@type\": \"Rating\", \"ratingValue\": \"5\", \"bestRating\": \"5\"}, \"reviewBody\": \"The magnetic hold is strong enough that I can remove the plate with one hand while flexing. Quality is obvious from the first touch. Highly recommend for any Max 4 owner.\"}\n  ],\n  \"hasMerchantReturnPolicy\": {\n    \"@type\": \"MerchantReturnPolicy\",\n    \"applicableCountry\": \"US\",\n    \"returnPolicyCategory\": \"https:\/\/schema.org\/MerchantReturnFiniteWindow\",\n    \"merchantReturnDays\": \"30\",\n    \"returnMethod\": \"https:\/\/schema.org\/ReturnByMail\",\n    \"returnFees\": \"https:\/\/schema.org\/FreeReturn\"\n  },\n  \"additionalProperty\": [\n    {\"@type\": \"PropertyValue\", \"name\": \"Plate Dimensions\", \"value\": \"390 x 390 mm\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Substrate\", \"value\": \"Flexible spring steel\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Coating\", \"value\": \"PEI (Polyetherimide), dual-sided\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Side A\", \"value\": \"Textured (matte)\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Side B\", \"value\": \"Smooth (glossy)\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Thickness\", \"value\": \"~0.5 mm\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Mounting\", \"value\": \"Magnetic\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Max Bed Temperature\", \"value\": \"130 C\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Weight\", \"value\": \"~320 g\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Lifespan Per Side\", \"value\": \"1000+ print cycles\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Compatible Filaments\", \"value\": \"PLA, PETG, ABS, ASA, TPU, PA-CF, PC\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Cleaning\", \"value\": \"99%+ isopropyl alcohol\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Compatibility\", \"value\": \"QIDI Max 4 only\"},\n    {\"@type\": \"PropertyValue\", \"name\": \"Warranty\", \"value\": \"90 days\"}\n  ]\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"What is the QIDI Max 4 Dual-Sided PEI Plate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 390x390mm flexible spring steel build sheet coated with PEI on both sides (textured and smooth). Mounts magnetically to the QIDI Max 4 heated bed, provides chemical adhesion for thermoplastics during printing, and releases prints cleanly when cooled by flexing the plate.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is this PEI plate compatible with other 3D printers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Cut to exactly 390x390mm for the QIDI Max 4. Will not fit QIDI Q2 (270x270mm), X-Max 3 (325x325mm), Bambu X1C (256x256mm), Creality K1 (300x300mm), or Prusa MK4 (250x210mm). Wrong size can interfere with leveling sensor and magnetic adhesion.\"}},\n    {\"@type\": \"Question\", \"name\": \"What is the difference between textured and smooth sides?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Textured side: matte satin finish, superior grip for PLA\/PETG\/TPU, wears faster (500-800 cycles). Smooth side: glossy finish, best for ABS\/ASA\/PC, more durable (1000+ cycles), produces mirror-like bottom surface. Flip the plate to switch sides.\"}},\n    {\"@type\": \"Question\", \"name\": \"How do I clean the PEI plate and how often?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Clean every 3-5 prints with 99%+ isopropyl alcohol and lint-free microfiber cloth. Deep clean every 10-15 prints with warm water and dish soap for PETG residue. Never use acetone, MEK, metal scrapers, or abrasive pads. Buff dry after cleaning.\"}},\n    {\"@type\": \"Question\", \"name\": \"Why is my print not sticking to the PEI plate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Five common causes: (1) Dirty surface - clean with IPA. (2) Bed temp too low - PLA 60C, PETG 70-80C, ABS 100-110C. (3) Nozzle too far - re-run auto bed leveling, check Z-offset. (4) Wrong side for material - textured for PLA\/PETG, smooth for ABS\/ASA. (5) Worn surface - glossy spots mean texture is gone, flip or replace.\"}},\n    {\"@type\": \"Question\", \"name\": \"How do I remove a print without damaging the PEI plate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Wait for bed to cool below 30C. Peel flexible plate off magnetic bed from a corner. Gently flex plate concave toward print - most prints pop off. For stubborn prints use a plastic (not metal) spatula. Freezer trick: 5 minutes in freezer causes thermal contraction and releases prints. Never use metal scrapers.\"}},\n    {\"@type\": \"Question\", \"name\": \"How long does the PEI plate last?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each side lasts 1000+ print cycles with proper care, total 2000+ cycles per dual-sided plate. Textured side wears faster (500-800 cycles) as texture flattens. Signs of wear: inconsistent adhesion, glossy spots on textured side, visible scratches. Flip to other side when one wears out.\"}},\n    {\"@type\": \"Question\", \"name\": \"Can I use glue stick or hairspray on PEI?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Generally no - PEI provides adhesion without adhesives, and glue residue interferes with chemical bonding. Exception: large high-warp prints (ABS, PC) where thin PVA glue on smooth side prevents edge curling. If used, clean thoroughly with warm water and soap afterward.\"}},\n    {\"@type\": \"Question\", \"name\": \"What bed temperature for each filament on PEI?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PLA 60C (textured), PLA+ 60-65C, PETG 70-80C (textured), TPU 40-50C (textured), ABS 100-110C (smooth), ASA 100-110C (smooth), Nylon 70-80C (textured, dry), PA-CF 80-90C (textured), PC 110-130C (smooth, enclosed). Start low, increase if adhesion is poor.\"}},\n    {\"@type\": \"Question\", \"name\": \"Is $89.99 worth it vs generic PEI sheets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For Max 4 owners, yes. Generic PEI sheets ($30-50) rarely come in 390x390mm; most max at 355x355mm or need trimming, risking misalignment with magnetic bed and leveling sensor. OEM plate is factory-cut, consistent coating thickness, matched magnetic interface. Third-party 390x390 from reputable brands (Wham Bam, Energetic) can be cheaper alternatives if available.\"}}\n  ]\n}\n\u003c\/script\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\u003cdiv class=\"t4s-col-12 t4s-col-md-12 t4s-col-item keywords\"\u003e\nTags: \nQIDI Max 4 PEI plate, dual sided PEI build plate, 390x390 PEI sheet, spring steel PEI\u003cbr\u003e\nPEI vs G10 vs glass, best PEI build plate 2026, textured vs smooth PEI, OEM vs generic PEI\u003cbr\u003e\nPEI plate not sticking, PEI cleaning maintenance, Max 4 bed leveling, PEI plate replacement, PETG residue PEI\u003cbr\u003e\u003cbr\u003e\n\nQIDI Max 4 PEI plate, dual sided PEI build plate, 390x390 PEI sheet, QIDI Max 4 replacement build plate, textured smooth PEI, spring steel PEI sheet, 3D printer build surface\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"QIDI","offers":[{"title":"Default Title","offer_id":44122977566763,"sku":null,"price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/5370\/9099\/files\/QIDI-Max-4-3D-Printer-Dual-sided-PEI-Plate-Qidi-Tech-Qidi-3D-Printer.webp?v=1779701264","url":"https:\/\/www.qiditech3dprinter.com\/en-fr\/products\/qidi-max-4-3d-printer-dual-sided-pei-plate-qidi-tech-qidi-3d-printer","provider":"QIDI","version":"1.0","type":"link"}