CNC router for wood processing

[Andrewg]

I'm no expert, but seems like you have grasped the basics of the challenge and are grappling with the details.

Two minor points:
- Wood machines need speed, and so more normally use 1610 ballscrews. You can do the maths, but might want to gear up between stepper and ballscrew.
- As linear rails carry two spaced carriages wider than your ballscrew, typically ballscrews can be shorter than their rails.

A major contributor here always stresses ' buy nothing till you have finalized your design' but guess you have those parts already.

As to rail leveling, you are quite correct to focus on this as a key step to building an accurate machine. You will find plenty on this forum about epoxy leveling. If done right, it addresses both leveling the surface for the rails and getting them coplanar. Your adjustable screw approach is an alternative for leveling each rail, but seems a lot of work verses simply shimming the rail.

Good luck with your planning

[ademenev]

Andrewg, thanks for your input!

I got a good deal on the rails and ballscrews set. That's what I've got, and I have to work with that.

I was planning on connecting the motors directly to ballscrews, but I will take your advise and order some pulleys and belts. If I later decide that I need more speed, I can change pulleys and possibly upgrade the motors.

[indulisap]

Good afternoon . A year ago I finished building my second cnc. Maybe something can come in handy
Indulis

[AndyGuid]

Looks like quite a rigid machine that you built there Indulis.

How much have you used that 4th Axis and using what software?

[indulisap]