Quote Originally Posted by Jonathan View Post
Whilst it's true that as it stands that machine will cut plywood at a reasonable speed it would improve it no end to have two ballscrews. I'm confident most people make a CNC router then ultimately end up using it for all sorts of things they didn't expect, so why risk compromising it later. True it's not cheap to have a second ballscrew, but as a percentage of the whole machine it's not so bad?
While I agree with everything Jonathan says here let me just say that because of the style of machine you have choosen it's not difficult to add another ballscrew etc at a later date.!
The pic of the machine posted earlier can be changed from single to twin screw setup by just adding another motor mount bracket and repositioning of the screws in just a few hours so if budget is tight then it's not major rebuild issue like on some machines.!

It will eat thin plywood all day long on a single screw setup but Jonathans correct you WILL want to try other things which will find it's limits but if finances are tight then it will be ok and should pay for it's own upgrade if put to good use.! . . . So don't be put off using a single screw setup and if your mindfull of it's limitations then it won't be a problem.!