I realize what you're talking about now. I looked on the site you posted. They're now cheep. I had the occasion to buy one that was a great price from someone that was closing a business. I was always sorry I didn't get it. ............FrankieYes it can be done at home - great tool to get old alu parts to look preset again, it removes oxidation etc. Some I leave with a silk finish other I buff up after the initial clean off. I use a Vapor home bench top 450, you need a good air compressor though. Tried with a smaller unit but couldn’t get it to the level I liked and I couldn’t get larger parts in it either
Here’s a link where I bought mine
If I have to clean paint of parts I may use alu oxide or a mix of alu oxide and glass beats. The glass beats will not take any material off.
Attached a few examples of before and after Vapor honing