Print this to add an electrical switch to your Delta / Kossel. It fits between the two 2020 profiles at the bottom of the printer. I use it to control a couple of COB LED strips that I added to my Delta Bot.

You can find the switches I used on eBay or Aliexpress if you look for something like "3 pin rocker switch".

I printed this with PETG, 20% infill + supports and attached it with two T-Nuts to the frame.