These are tile spacers that allow you to see the corners and are easier to handle and remove. There is a version for corners as well as inline. It is made for a 3/32" joint but I have included the downloadable A360 file to allow changing the, "tilespace" parameter.
Also, I added the ORIGINAL PRUSA i3 MK2 gcodes.
A360 downloadable files:
https://a360.co/2TgEont
Category: Parts
The author marked this model as their own original creation. Imported from Thingiverse.