Reply by brtech

  • Advertise with us

Posted on CNC machine needs

View brtech's profile


1068 posts in 3836 days

#1 posted 02-06-2017 10:38 PM

People have done that, although they used steppers and not servos. It doesn’t work very well. Too much backlash and other issues.

Electrical is maybe $650-750 to $1000 or so. Four steppers, a Gecko 540, a power supply, computer and cables. Then you have software.

The mechanics really is a couple K$ to get the accuracy and repeatability needed. Lots of folks have tried to do it cheaper. You can, but the result is a toy and not a tool. You really need a ball screw for Z. For X and Y, you either need a ball screw or a rack and pinion, depending on the range you need. On the ball screws, you need a decent coupler. You need some heft in the carriages and the gantry, which typically means some form of 8020 extrusions or something like that.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics