Beginner MYCNCDIY Mill Build questions

[Boyan Silyavski]

I am not a fan of "ultra cheap" builds as at the end you will have "ultra nothing" as a result and money spend for nothing.

500mm wide working area suggests 2 motors at the long axis that moves the gantry hence 4 axis board. 100-300 euro, i would say 200 euro here only for the BOB. Now if you could avoid somehow this using arduino or whatever cheap. / Saying cheap i don't mean crap Chinese boards without support

Next thing are drivers and motors. if the gantry is No more than say 300mm wide, low voltage drivers and motors are possible/<55VDC/ , for 500mm gantry if you want to achieve normal speeds you will need drivers capable of 70-80VDC and motors 4.2A / 3Nm/ . 4 motors here are 100euro and 4 drives 180-250euro

So you see you have to invest if you want something capable.



But lets start backwards.

What you will 100% need is ball screws and square rails, given the current prices you will save next to nothing using round rails.

So start from the frame, the rails and the ball screws. Cause that you can not change later. When you have money just continue the build.

Take care at the steps below or you will spend unnecessary amount of money due to mistakes

1.Make the drawing
2.Show it here
3.Receive critique
4. Finalize the drawing
5. Buy ball screws and rails.
6. Make frame
7. Buy motors,
8. BOB. drives.....etc.

Hope that helps you to organize your thoughts