I have to de-burr 3/4" aluminum square tubes that have literally hundreds of holes. Even using Cogsdill bits takes a long time. I was searching around and found some info on using nylon abrasive tools. I noticed a few offered nylon abrasive tube brushes as "de-burring" tools. I'm wondering if there's a way I could run one of those on a long extension through the tubes. Has anybody ever tried these for that? I actually started thinking about it while I was watching that "How It's Made" show, and they were showing how these guys put a brushed surface on stainless sinks. It looked like they were using some sort of Nylon abrasive covered drum that spun while partially submerged, and then the assembly line would run the sides of the sink around the drum. I was thinking maybe I could also use something like that to finish the outside of the tubes as well, since we use a brushed surface on them now... but it's done by hand.
Thanks,
Dave