Quote Originally Posted by ivars211 View Post
Ok, I will keep that in mind. The question I am having, if perhaps I am going to buy one pair of profiled linear rails (DFH15), which axis would mostly benefit from them? If I am not wrong it should be Y - 700mm (allowing Z to move).
No all or None is the only way really.

If you must Then Z axis is actually the most important area on the machine because it carry's the sharp bit and if that moves or flexs then doesn't matter how well built the rest is the machine will give rubbish and inaccurate parts.!!.. . . . . . . It's very common for people to under build the Z axis only to instantly regret when the chips start flying, it's also often the most upgraded part of any DIY machine.!