1.5" 8020 limit switch and rail slot clips
by the_digital_dentist, published
These are designed to snap into the center channel in 1.5" square 8020 aluminum extrusion. The clips hold tight even after several cycles of removal and replacement. They hold so tightly that it takes several lbf to slide them in the slot (far more force than will ever be applied to a limit switch!). you may need a screw driver to pry them out!
Watch for more 8020 oriented parts to be added in the immediate future...
For maximum strength, print everything in the orientation shown in the design files (as presented in the initial thingiview)! I printed with Octave fluorescent red ABS. Using Slic3r, 0.2mm layers, 100% fill, no support material, no brim, under Print Settings tab, Layers and perimeters, Advanced, check "avoid crossing perimeters". The photographed parts are untouched, exactly as they came off the printer - no clean-up necessary!
Use the curved top clip for general use- it works great for keeping your wiring inside the slots in the 8020 for a neat appearance. The square top clip is really more of a base to use in the design file so you can easily modify it to do whatever you want.
Note- holes on one flange of each limit switch clip are large to let screws slide through, on other flange they are smaller to let threads grab the plastic. No nuts or washers are needed.