I am attempting to build a machine that can work on 4' x 8' pieces of wood and plastic. I think I have figured out how I want to build my moving assembly. Now I'm trying to figure out the best route to go for clamping actual work pieces down.. After looking at many other builds, I'm definitely in the low budget category. I think ultra low cost way to go would be to just mill t slots in some wood. I however don't see this holding up very long to repeated t nut tightening. I see a lot of people do vacuum tables, but i haven't researched the cost and it seems like you almost want a working cnc machine to make it lol. Perhaps ill eventually make one, but until then, what options do I have that fall in the low budget category for clamping?