I took a pedal off one of my wife's sewing machines and use it as a variable speed control for my dewalt die grinder. I had to cut the ends off and put a male plug on one end and an outlet on the other. It works for me. View attachment 1715674103
LOL...I tried that back in about 1985, damn near killed myself and switched to air. I wasn’t coordinated enough to run the grinder and my door at the same time.