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Steel bases with PEI surface are original Prusa consumables compatible with Prusa I3MK3S and Prusa Mini 3D printers.
Both the Prusa I3MK3S and Prusa Mini have a magnetic heated bed that supports a steel base with PEI surface, which facilitates adhesion between the bed and the part, preventing the part from peeling off.
There is a choice of two types of base: PEI smooth and PEI powder coated textured. Both bases are coated with Ultem PEI (polyetherimide). The difference between the two bases is that the textured base is coated with PEI powder baked directly on the surface, while the smooth base is glued to the foil like a sticker. It is possible to use both bases to print with any material as long as it is used correctly. There are different colours of steel base, however, they all contain the same properties despite the colour variations.
In the case of the Prusa I3MK3S, it comes with the textured PEI base by default, while the Prusa Mini comes with the smooth PEI base by default.
This base is made of spring steel with double-sided smooth PEI. It is the best PLA printing solution and has a great adhesion with almost all materials. The bottom of the 3D prints has a smooth finish.
The color of the smooth PEI base may differ from the product image (may be black, gold, green...), but in any case its properties are exactly the same regardless of the color.
Powder coating directly on the metal makes it very difficult to damage this base. If the nozzle grazes with the base, it does not wear out, but the top coating of dust (bulges) wears out. This coating also attributes a rough appearance to the bottom face of 3D prints that is in contact with the base of the 3D printer.
The following recommendations should be followed for the use of Prusa's PEI bases:
Ignore the two holes in the steel base opposite the notch, only serve to facilitate the manufacture of it.
The use of the trowel should not be necessary, only necessary if the cold printed object cannot be decoupled from the printing surface by any bending of the base.
Because the bases are made of steel, they are prone to oxidation. Don't leave them for long in a humid environment.
In addition, in the case of the textured base, the following warnings should be taken into account.
Do not cool the base in a refrigerator or freezer.
The following are the most common problems that may arise with PEI bases, as well as their possible solutions:
With the passage of time, small bubbles may emerge below the PEI. It is nothing serious, as these bubbles usually do not affect the print quality and after a few days disappear. However, there are two tips that are effective at undoing those bubbles faster:
Sometimes when unpacking the smooth base there may be a small dent. Usually, simply flip the base and use the other side is enough to fix it. The warmth of the bed causes the dent to disappear on its own after a couple of days.
Manufacturer | Prusa3D |
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Compatible with | Prusa i3 MK3S Prusa Mini |
Printing measures | Prusa i3 MK3S: 250 x 210 mm Prusa Mini: 180 x 180 mm |
HS Code | 8477.9 |
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