I am currently designing a 5' x 10' R&P machine.

My question will no doubt get arguments from both sides of the fence.

Which is a better design?

20-25mm round supported rails with an R&P drive system or 1/4" 1018 cold rolled plate with linear carriages with an R&P drive system?

I am looking for precision as well as smoothness in action. Cost is not a problem at this point in design.

Thanx in advance!