Prusa I3 MK3 X Carriage for M3 nuts
thingiverse
This is the same model that Prusa offers, the only modification is that you can use M3 screws with a normal, hexagonal nut instead of squares ones. I did this because where I live is impossible to get the squares one. I hope this could help someone else in the same situation!
Download Model from thingiverse
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