IdeaFormer double-sided PEI plate for Prusa MK3/MK3S
Double-sided 241 × 254 mm magnetic spring steel plate (PEI and PET), an alternative to the original plate of the Original Prusa i3 MK3 and MK3S.
How to choose the variant
On the page, check the 241 × 254 mm size and choose the surface combination that includes PEI.
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Delivery country
Availability and shipping depend on the delivery country: check them on AliExpress.
Compatibility by printer
| Printer | Variant | Status |
|---|---|---|
| Prusa Research Original Prusa MK3 Original Prusa MK3 | Original Prusa i3 MK3 / MK3S — 241 × 254 mm | Compatibility declared by the seller Assessed from documentation Verified on October 14, 2026 Model listed by the seller; 250 × 210 mm build area documented by the manufacturer. No hands-on test. |
| Prusa Research Original Prusa MK3S Original Prusa MK3S | Original Prusa i3 MK3 / MK3S — 241 × 254 mm | Compatibility declared by the seller Assessed from documentation Verified on October 14, 2026 Model listed by the seller; 250 × 210 mm build area documented by the manufacturer. No hands-on test. |
What you need to install it
Why it was selected
The seller listing names the Original Prusa i3 MK3 and MK3S, and Prusa Research documents a 250 × 210 mm build area. It is an alternative to the original plate that can be bought on AliExpress.
Limitations
- This is not an original Prusa Research part.
- Compatibility is declared by the seller and checked against the manufacturer’s documented build area: no hands-on test.
- As of 14 October 2026 the listing had few orders and no ratings.
- The MK3S+, MK3.5 and MK3.9 are not named in the listing.
Available variants
- Original Prusa i3 MK3 / MK3S — 241 × 254 mm
Sources
- 241x254mm PEI Sheet for Prusa I3 MK3S Double Side Spring Steel Sheet PET PEI Magnetic Build Plate for Prusa I3 MK3 MK2.5S MK3S — IdeaFormer Factory Store (AliExpress), accessed on October 14, 2026
- Original Prusa MK3 — official technical specifications — Prusa Research, accessed on October 4, 2026