I have been thinking about purchasing a vibratory tumbler for a little while now, and I'm just not sure if it will work for my application or not. I have been looking at a couple of benchtop models that look like they should do the job. Right now I have maybe 5,000 parts a week I need deburred. Here's the thing, these are little brass washers ranging in size from 5/8" diameter to 3/8" in diameter with a 8-32 tapped hole in the middle .13" thick. My question is that I have a small burr on the backside of this washer where it was parted off, which media would be best for 360 brass and some aluminum, and can I successfully remove the burr and not damage the threaded hole?
Thanks in advance for any input.