Summary

Wire Staple for 8/2 Romex electrical wire (Southwire 8/2 8AWG with ground https://www.homedepot.com/p/Southwire-125-ft-8-2-Stranded-Romex-SIMpull-CU-NM-B-W-G-Wire-28893602/202316591 ).

I'm installing a garage heater and need some wire staples for 8/2 wire that I can easily install and remove in case I want to move the heater to a different location.

For the screws, I use #8 x 1/2 inch from home depot. https://www.homedepot.com/p/Everbilt-8-x-1-2-in-Phillips-Pan-Head-Stainless-Steel-Sheet-Metal-Screw-50-Pack-802912/204275048

I use PLA+ printing at 0.2 layer height and 50% infill. You may want to use ABS or PETG for higher temperature.

Check your local codes before use.

Good info on securing wire - https://www.thespruce.com/securing-electrical-cables-1152891