Mk3 / Mk3S / Mk3S+

Printed part upgrades

Chassis, etc.


Extruder & X-axis


Y-axis

Printer hardware upgrades

The texture is similar to the Prusa sheets but results in a more porous looking finish on PLA and PETG.  On Reddit and Amazon, customers claim that it is easier to print with these sheets compared to the original Prusa parts. Regardless of which textured sheets you choose, your parts will look far more professional with a textured sheet than regular smooth sheets, but some added care is needed:

Cost: ~$30-40

Install: 2 seconds

An enclosure helps to maintain a consistent air temperature around the printer resulting in more reliable prints for PETG and ABS. It also reduces noise and smells. You will need to cut a small hole to pass the power cable through.

Cost: ~$30-40

Install: 5 minutes

Ever get blobs of filament sticking to the nozzle? Or have a difficult time keeping the extruder at a constant temperature when the part cooling fan is on?

Put a sock on it!

These little beauties just clip onto the heat block and keep everything clean and at the proper temperature. They don't last forever and will eventually crack or deform from so many heat-cycles, so best to keep a spare.

Cost: ~$3 each

Install: 1-5 minutes depending on which part cooling shroud you have installed

The default 0.4mm nozzle is a "jack-of-all-trades" it does everything OK, but isn't the best at any particular job. Don't be afraid of swapping the nozzle on your printer. Use the right nozzle for the right job. Need super detail for a figurine and can wait all day? Try the 0.25mm nozzle. Need a super strong part that prints fast? Try the 0.6mm or 0.8mm nozzle.

Cost: ~$5 per nozzle

Install: 5-10 minutes depending on which part cooling shroud you have installed

The right side of the printer is braced with the PSU. Reduce vibrations on the left side with this 3D-printable part to tie the Einsy PCB box into the aluminum extrusion.

Cost: ~$0.50 in filament

Install: 30 minutes

The printed par eliminates the flex of the factory motor mount and adds a more robust end-stop to reduce the likelihood of "crashes" on the Y-axis due to Y-bearing misalignment.

Cost: ~$0.25 in filament

Install: 15 minutes - you will need to re-tension the belt

Spare Parts

Some printer components wear out so it's best to have a few spares: