6.3.2 PEI print surface preparation
To achieve the best adhesion on the new surface, it is important to keep the surface clean.
Cleaning of the surface is very easy. The best option is
Isopropyl alcohol
available in
drugstores which is the best for ABS, PLA and others, except for PETG where the adhesion
may be too strong. Second option is to use a gentle spray of a
window cleaner
(Windex or
similar) on a paper towel and wipe the surface. The bed can be cleaned even while hot, just
be careful not to touch the surface or the nozzle. Alternatively, you can clean the bed with
warm water and a few drops of a dish soap
on a paper towel.
Denatured alcohol
is yet
another option.
The surface does not have to be cleaned before every print! It is just important to
not
touch
the print bed with
your hands
or
dirty tools
.
Clean your tools with the same
solution
as you would the bed and you will be able to start your next print right away.
You can leave small marks on the print surface with your nozzle or tools, they will typically
be shinier than the rest. It does not affect the functionality or adhesion. However, if you want
to have same surface look on the whole printbed you can resurface it. The easiest way is to
take a hard side of dry kitchen sponge and wipe the affected area with circular motion gently
few times.
The industrial glue which holds the PEI sheet on the heatbed itself softens when
temperatures greater than 110 °C are used. If higher temperatures are used, the
glue can migrate under the PEI and create slight bumps on the surface.
Summary of Contents for Original Prusa i3 MK2
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