Quote Originally Posted by Boyan Silyavski View Post
I buy angles, plates and profiles from Motedis, bolts and nuts 100% from China, sometimes angles and plates from China too. there is another supplier from Germany that can ship long profiles and screws

You can weld the base and epoxy level it, or shim directly the rails or use smaller and cheaper aluminum profile on top / AY/ and shim profile, all rest from aluminum

Aluminum profile may be perfectly straight or maybe not, whatever the case for a properly made machine you will need a straight edge as long as your X/gantry and at least 2 precision squares. there is no way one to make a good machine without that.
If I weld the base, wont I have to stress relief it then? Or would it be enough to weld and just use epoxy right after for leveling?