[flojor10]

I am a newbie at cnc, I just finished building my 20x20x5 diy cnc. I am not happy with precision I have with it (+/-.01 in) and want to start to build one that can mill aluminum with .005-.001 precision. I would like to reuse most of the components of my old machine. I am unsure whether to go with a moving gantry or table and what material to use. Should I upgrade to a 4 axis design or stay 3 axis? I need better precision and I have a budget of around 200$. Any ideas, tips or machine plans would be greatly appreciated.

Here are some of the components I would like to reuse:

SBR 12 Rails- 4x 20in rails and 2x 8in rails

3 300oz/in Nema 23 Steppers+ Driver Board 1/16 stepping capable

Acme 3/8-12 Lead Screws

3 Anti-backlash nuts and Motor Couplings from Dumpster Cnc

George F.

[turbois_300]

where can i buy rails like that in canada?

[Arich0908]

How is that cnc board working out for you . I have wanted to buy one for a year now.

[flojor10]

How is that cnc board working out for you . I have wanted to buy one for a year now.

The board is great for begginers, I bought a kit from goodluckbuy.com that had the 300ozin steppers, 3 axis board, and the cad/cam and mach full license cd for 150$. Just make sure to get the right power supply and get a case or buy the one on eBay w aluminum case. I've wired my limits and e stop to the board. Its not top notch but for the price you can't argue. If you have questions or need setup info feel free to ask

George