Dust control improvement for the 18″ Clarke-American OBS Sander, while tuning up my unit a local expert suggested retrofitting it to accept a dust control “skirt” that’s an option on newer units. It’s a hard plastic border that fits around the business end of the sander, with bristles toward the floor & a bag that seals around the lower sanding unit. Cost $250. I also bought an extra vacuum bag for $13 as the original wore through in a spot. I’ll keep an extra in the job trailer, just in case…