I recently replaced my DW705 CMS with a DWS780 SCMS. The dust collector I built for the 705 was to small for the 780. I have several sheets of used plywood so I started out from scratch making a new one. I used one of the bigmouth collectors in the bottom that, right now, dumps into a 1/2 plastic 55gl drum. The outlet of the bigmouth can be connected to a DC if needed. The outlet for the dust chute is at the rear of the sliding tubes so I had to go past it a couple inches to keep it from pluggin up. Because of the sliding tubes it ended up being a pretty big collector. It doesn't get all the fine dust but it gets most of the chips. If I had the DC hooked up it would probably do better on the fine dust. Just completed it couple of days ago.