No secret, my list changes a lil but some words stay around, this is not all but you get the idea.
Craftsman, Craftsmen, Atlas, Lathe, Shaper, Milling Machine, Grinder, Buffer, Machinist, Band Saw, Bandsaw, Drill Press, Drillpress, Metal Cabinets, Vise, Anvil, Blacksmith, Miller, Wilton, Palmgren etc.
I stay on CL, I mean stay on it. I have at least one page on my computer open to it constantly and a couple apps on my phone so I can search anytime, anywhere. Watch your news paper classifieds, free advertisers and get to know a scrap guy.

Check out your local state and school board auctions, small town consignment stores and private auctions.
Whatever interests you, write it down and keep searching, you will find that the longer the list, the easier it is to find things cheap. If you are dead set on a certain machine, start looking for deals on accessories and things for it as well, not just the machine. Your list grows, you find more things cheap, be careful though, it's a slippery slope
