Working in a small one-car garage has it's setbacks. One of which being If I run my CNC plasma cutter with the door closed for too long, it starts looking like Snoop Dogg's recording studio in there.
So, to remedy this problem I installed a vent hood that will come down from the ceiling to right over that the machine at the push of a button, and retract when I'm done with it.
Now, I never have to open that heavy garage door again door again! (Thank god, my back hurts)
I realize this is less of a homemade tool, and more of an accessory for a tool, either way, enjoy!