m3 T-Slot nut for 20x20 mm extrusion

thingiverse

Finding m3 t-nuts for 20x20 extrusion proved difficult; however, printed alternatives provide a quick and efficient solution using minimal plastic. These printed nuts function similarly to flat washers, preventing nut spinning or slipping within channels. For added strength, combine with m3 fender washers. Print the T part's trunk onto the component for proper alignment and centered holes. After printing, insert m3 nuts into the cavity - designed size may require adjustment. Avoid over-tightening screws to prevent t-nut stripping.