Hi All,

I'm having a hard time deciding what to use. My cnc will have a working area of 24" x 36", mainly wood project with occasional aluminum work.

I already have my linear round rails and ball screws, so my next step is making the frame.

I like going extrusion, but the cost is killing me.

Aluminum tubing is my next choice, but I have to drill holes as opposed to the extrusion already having a channel for the screws. Accuracy will be a challenge.

Steel is nice and strong, but again need to drill holes and maybe epoxy leveling is needed to mounting the rails...not sure how much leveling I need to do with the others. I'll be bolting the pieces instead of welding.

Which one should I be doing?

Any other choices for frames?

dinkyguitar