Summary

This is an M4 metric T Slot nut, that has to be used in slotted (6mm) Aluminum profiles.
I use them for the frame of my new delta printer that is in construction
The profile shown in photos is 20x40mm

Print Settings

• Rafts:

  Doesn't Matter

• Supports:

  Yes

• Notes:

  printed with support in ABS
  I print them in multiple copy at one time (of course)

Post-Printing

Just remove by hands printing support and slightly smooth surfaces with a file
Press by hand an M4 nut in the receptacles. It will stay in position due to the low clearance between printed part and the nut