Quote Originally Posted by NordicCnc View Post
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?
Using 100x100 profile or any = no problem. But the key is in the welding. Welding no more than 2 inch at a time from different sides and checking with laser thermometer for the temperature of the beam overall not to rise more than 60 degree C will do the trick. It must be done with patience and cleverness.

If you read my building log you will see that it took me some time to weld my big machine, but it was worth it.

And as i said many times before, 100x100x3 is the ideal material for big strong CNC.