Hey everyone! I basically built a CNC recently, it consists of:
8020 frame (1530)
Steel rails with extended linear carriages from cncrouterparts.com
R&P system from cncrouterparts for X&Y axes
Homebuilt threaded rod Z axis
Gecko G540
Big Power Supply
Mach3
Basically all the electronics are from this kit HERE
I loaded Gecko's .xml file for Mach3. Changed the motor tuning to 1909.861 steps per for X&Y, and 35000 for Z. This results in accurate movements... UNTIL I try to load some G-code in. At this point the origin moves and the motor tuning somehow changes (although all the settings remain the same). All I can think of is that the G-code has something weird in it... I don't know much about G-code though.
The odd thing is that before I changed out the electronics the same code worked just fine (the old setup had some ghetto DIY hobbycnc board and motors that stalled out easily).
Here's the start of my G-code:
"( Mach2/3 Postprocessor )
N10G00G20G17G20G90G40G49G80
N20G70
N30T1M06
N40G00G43Z0.2000H1
N50S12000M03
N60G94
N70X0.0000Y0.0000F250.0
N80G00X11.9818Y42.4337Z0.2000
N90G01Z-0.1000F60.0
N100G01Y0.7643F250.0"
Maybe I'm missing something really simple, but any and all help would be appreciated!!
Frary