CAD Dimensions

I found myself having to go back and look these up in past designs, so here's a list of commonly used dimensions that seem to work w/ my printers.

M3

• M3 Nut = 2.825 (radius)
• M3 Hole = 3mm
• M3 Socket Head = 6mm
• M3 Support Nut Slot = 2.62 x 5.65 x 5.14mm past center of screw path
• M3 Socket = 5.6 cap, 3.1 deep, 3.1 shaft

Extrusion Rails

1. Draw an 8.5mm tall square the length of the part and extrude by 1.5mm
2. Add a 1.5mm chaffer to top and bottom

Micro Endstop

1. 13.10 x 6.10 (tight fit)
2. Screw holes are 3.5mm from centerline, 5.28mm from front