Loc-Line screw on magnetic base for helping hands

thingiverse

I built a versatile grip using knockoff Loc-Lines purchased from Amazon. I engineered it to screw onto standard threaded bases, securely holding a 1" x .125" magnet from Amazing Magnets. I printed the design in ABS plastic, allowing me to easily insert the magnet and then bond the 1.5mm cap with acetone. If you use PLA instead, I recommend gluing the magnet firmly in place before attaching the cap for maximum security; this magnet is rated to lift around 48 pounds and costs just $3.20 each. On the other end of the Loc-Line, I attached a threaded alligator clip by screwing it onto the line with a #8-32 screw. After filing down the opposing ball slightly to enable them to snap back together, I applied heat shrink to prevent scratching and minimize heat buildup. Finally, I painted a 1/4" steel plate and added rubber feet to serve as my base; since my workbench is made of wood, this helps prevent damage. If your bench is constructed from steel, you can skip the extra steps and attach the Loc-Lines directly.