I am having some issues with a cnc router running Mach3. Lets see if I can explain this properly.
It all started cutting a circle in a piece of UHMW. When I was done the circle measured out of round by .025 / .03 travelling along X axis.. I started to investigate & was doing searches on the web & here at CNC Zone. I made some adjustments in Mach3 & started doing some tests.
I ended up ataching a 12" digital caliper on my x axis, opened it all the way. I jogged the axis until it started to move the caliper. I thened zeroed the caliper. I went into the MDI screen & zeroed the x axis. I then plunged into the material .125 deep & did a move, lets say 10.000 with a .500 end mill. I checked the travel on the Mach screen & it read 9.9996. I read my caliper & it read 10.000. I then preceded to measure the the cut. It was exactly .025 short or 9.975.
If I cut a square or circle, it is always off that amount on the x axis but dead on with the y axis. I have no significant backlash on any axis, for sure not .025.
I have had help from the manufacturer, Vortech Routers. They have gotten me through a few problems, but this one is still kicking my ass. Any help would be greatly appreciated.
BTW
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