This is a remix of an original desing https://github.com/gregsaun/prusa_i3_bear_upgrade .It made for M3x4x8 heat set inserts to use with M3x18 screw from Bear Upgrade.
There are two stl-files in attachment - for Bear Upgrade MK2.5 and for Bear Upgrade MK3.
I printed this model with black PETG by Bestfilament on Original Prusa smooth PEI sheet.
UPD 20.02.2024 rev2: Fix the holes dimentions. Now the holes diameter 4.7mm instead of 4.6mm
The author remixed this model.