The Rockwell 10″ Contractor saw I own has an open frame and an external motor hanging off the back, making efficient dust collection an issue because controlling the airflow is next to impossible.
I have a friend with a similar saw on an open frame, but his saw’s motor is more contained, so he doesn’t have the challenge of plugging a hole that allows the motor to pivot as the blade is tilted to make a beveled cut.
I may still try to close off the cabinet and plug the holes to set up a more traditional dust collection arrangement, but I have an idea I’d like to try out first
Here’s what I’m thinking: I might be able to get effective collection by attaching a “fender” of sorts around the blade under the table. If I attach this fender to the arbor assembly (similar to how I have mounted the riving knife) then I can keep it in close proximity to the blade, which should make for very effective dust collection.
I made a concept drawing in Sketchup to work through some kinks in my mind:
I like the idea, but I still need to figure out if it will be practical to mount this to the arbor assembly to have it move vertically with the blade, or if I should just attach it to the horizontal rails so that it will tilt with the blade and motor, but will not respond to the depth of the height of the blade.
I’ll keep you posted.