Operate a blast gate from a standing position
A pivoting arm system makes opening and closing a blast gate easy.My table saw has the typical 4-in. dust port located on the back side of the saw cabinet, near the floor. Wanting to be able to open and close the port when standing upright near the saw, I created the following arm system. I’m not as limber as I once was, and this setup saves me from bending over every time I want to open the blast gate and use the saw. It has worked great with no problems for a number of years now.
The pivoting arm system is cheap and easy to build, and it will work just as well on other machines with blast gates mounted down low. Aside from its ergonomics, I also like how the system lets me see with a quick look from anywhere in the shop if the gate is open or closed, based on the handle position.
To be able to operate the gate from the front of my saw, I drilled a new porthole on the right side of the saw cabinet, rerouted the internal dust hose, and mounted the arm assembly on the legs that support the saw’s extension table. You could also leave your dust port right where it is and mount the assembly on the back side of the saw cabinet.
The critical element is the long arm, which has an offset pivot point that gives it a 2:1 movement ratio, allowing you to open or close the blast gate with a short push or pull of the handle. The ends of the arm move on a slight arc, while the handle and the blast gate move in a straight line, so little pivoting connectors are there to allow for the deviation.
—Eric Rimel, Spring Green, Wis.
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