Ibuilt one using a clear plastic bin turned on it's side. Built wooden frame work around the back side and mounted a 4" ventilation fan. Attached a dryer vent hose and run it thru an opening to the outside, I a furnace filter inside the bin and put a light on the top. As an afterthought I should have made the vent opening on the top as it draws all the dust across the painting parts. Still need to use a mask.