The cabinet on our industrial sandblaster at work (before I retired), had a metal plate riveted to the side listing all the requirements (electrical, pressure, cfms). Look for a plate or sticker.
I would note that we used two types of media: sand and glass bead.
The sand removed material very fast but left a rough, irregular surface.
The glass bead was kinder and gentler, but slower in material removal. On metal it left a beautiful matte finish on metal.
I m not sure what media to use on wood.
We also had tumblers that used a wide variety of media. I’ve taken the smaller ones home with me to fine sand wood knobs. Nothing else works nearly as well.
Both vibratory an rotary tumblers in those small sizes can be had for under $100.00, though the industrial grade ones are about twice as much. The difference is in service life.
If you ever have a bunch of small parts to sand, do yourself a favor and get one of these tumblers. Amazon sells them.
Addendum: I used crushed walnut shells to smooth out the wood handles. The walnut shells do not actually remove any material. They crash into the wood so often that they cause the loose fibers to bend back and forth and fall off from material fatigue. The process takes significant time, but almost zero effort.
I put about 15 handles in with the walnut shells in the morning and I removed them the following morning. They were so smooth that it looked like they had already been lacquered.
I installed extra long screws and cut off the heads. I dunked the knobs (round) in my 50% Minwax gloss oil based and 50% mineral spirits. I let them soak for about a minute and then using a similarly soaked rag, I wiped off the excess. It looked terrific after just one coat, but I knew that was not enough coating thickness. I repeated 4 more times for 5 total coats.
I’m not sure tumbling that long was the best choice. I’ve often wondered if I could tumble on shellac using straight shellac flakes an fresh walnut shells. I may try that one day.
NOTE: I used rigid packing foam and poked the long screws into the foam to hold the knobs while they dri
