Kevin ,I collect with vac, at the source on my 788 ,at the blade ,top and bottom ,my foot switch is on the center bottom brace ,directly under the blade ,no dust ever gets on my knee. My cabinet ,the heavy dust settle on the bottom ,the stationary vac pu gets all the fine airborne dust ,while it's still closed I have to vac the big stuff off the bottom ,before opening it up ,I can't collect at the source there because the source keeps moving as I move all over the piece ,still I get it all ,while still sitting in my chair. slip fit ,allows me to pull extra hose in to reach it all .