Looking for a supplied air system like the HobbyAir units.

Check craigslist for a Neoterik MC1. It's an old unit from the 90's, but works good and can be had for a fraction of the price of a Hobbyair.

Thanks for the note. I'll keep an eye out for it. Found some old listings on eBay and it looks promising.

I had a few customers build their own from a small shop vacuum. They worked great!
John