I have one, it is well used and saves fingers. The stop purchased with it is useless. Even with that I love it. I simply use a nice piece of scrap and a spring clamp. I place the tube between the wood stop and the sawblade and start cutting. My hands are inches from the blade every time. Rarely the cutoff sails away, but usually it is nicely to the right of the blade due to the downslope edge. If I ruined it I’d buy a new one immediately.