Quote Originally Posted by glenn bradley View Post
I'm no machinist and cast iron machines very easily. However, I have fixtures that attach to machines in my shop with 1" rare earth magnets and have never given me a problem. Remember to have an opening at least equal to the exit port area for return air into the box.
I built such a box around my router and found allowing return air only from around the router through the opening in the router table worked best. It creates so much suction I don’t need a separate hose attached to the fence.