M3 T-nut using heat-set insert 6x10 for 20x20mm, 20x40mm rails
thingiverse
I had an awful luck getting the printed T-nuts that use standard (hex) M3 nuts to work: misshapen prints due to weak adhesion (small contact surface), gummed up or destroying the T-nut thread when trying to heat-set them, falling off when press-fitting them, both when using glue. I finally tried making my own, using the M3 (outer diameter 4mm) heat-set inserts and they worked just fine. These lightweight nuts don't need any special orientation to print - just start with the flattest area. They are actually a little shorter than the heat-set inserts, so leave a bit of the insert sticking out, into the inside of the rail. The screw goes about 4-6mm in so use M3 x (thickness of the thing you affix + 4 or +6) screws.
With this file you will be able to print M3 T-nut using heat-set insert 6x10 for 20x20mm, 20x40mm rails with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on M3 T-nut using heat-set insert 6x10 for 20x20mm, 20x40mm rails.