Topics

1

General Mach Discussion / Mach 3 CNC problem

« on: March 19, 2020, 03:38:38 PM »

I currently have a CNC for wood working from China, its the largest working surface table they could send that could fit in a container. Everything is working fine, but I noticed when the X & Y axis's work together to create circles or a radius, it seems to be slightly erratic and not smooth at all. The holes and radius's all seem just fine and accurate, just a little concerned that something is not quite in tune with each other. My smaller Jcut CNC (4' x 8" working surface) seems  way more steady and smooth. Almost like the 2 stepper motors that are on each side of the table for the bridge drive are the ones not in sinc with each other. Is there a fix to smooth out this behavior?

2

General Mach Discussion / Mach3 scaling issue

« on: February 18, 2020, 04:15:47 PM »

I currently have 2 CNC tables that both run the same program of Mach3, I just started my new CNC but for some reason the g-code loads perfectly normal and lays out on the screen to scale, but when I start the program on the new machine it follows the correct tool path but at a much smaller scale than the DXF drawing I imported into it to create the g-code. The same exact g-code runs fine on my slightly older machine, but the same exact g-code will not run properly to scale on the new CNC. What would cause this to happen? and how can I fix this issue? The file extension is an .NC and I am pretty sure I ran into this problem before but cannot remember what I did to correct it, I think it had something to do with the file extension.