Tool-Actuated Vacuum Retrofit
You don't need to be a tech wizard to automate your shop vac.
I retrofitted an auto switch onto my shop vacuum for a handy tool-actuated setup. The device is a plug that automatically turns on my vacuum when the device senses a load from a power tool. I simply plug the dust-producing tool into one of the power-tool outlets and the vacuum into the accessory outlet. The switch costs a little under $40.
I mounted the switch to the vacuum by way of a U-shaped bracket made from 1/8-in.-thick by 1/2-in.-wide aluminum bar stock bent in a vise to wrap snugly around the switch. A pair of #12 sheet-metal screws anchor the bracket to the vacuum. Short, 1/2-in. #10 sheet-metal screws capture the switch between the bracket arms.
Before running any of these screws, I made sure they weren’t going to hit any delicate components. The device is designed to be plugged into a wall. The bracket allows the switch to swivel down when not in use and to swivel upright to allow an extension cord to be plugged into it.
— Jay B. Lane; Portland, OR
From Fine Homebuilding #210
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