Im new, am a 3D designer. Need a New cnc machine and need advice and guidance

[FlyHighRC]

you dont need to be to exreem about the wields, as long as its sort of level on the top, and measures square ( you will see any twists when cutting the steel into parts, its easy to avoid any visible distortions, just use the best bits for the top ). I did the same as your suggesting though, i got a firm to do the welding, after i had cut and marked the pieces.

Epoxy does most of the rest,

Sounds good :) hopefully i can make a start on the design soon...Just need to pick the rails i want as i can then design the machine around these. 1000 by 600/700 linear rails...know where I can get me some? :D