If you have metalworking skills I'd suggest Mechmate.com the finished product from their plans is very industrial in quality and there is a fairly active forum of people with helpful experience. The plans used to be free and they've started charging for them which is a bummer, I don't think there was any license when I got mine that said no sharing, since they were free at the time anyway. If it looks like a machine you are interested in I'd probably be willing to hunt down the PDF plans.