Hi All
I have just purchased a Chinese CNC Router 6040 (
http://www.ebay.com.au/itm/320774368487?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 ). I have set-up a PC with Windows XP installed a licensed version of MACH3 and set-up as per the instructions provided with the router.
I downloaded the Scorpion from the download section of this forum. It seemed to cut fine until just near the end when the cutting line seemed to suddenly shift. I put on a new piece of board this time I drilled a hole at the (0,0) position the board. I ran the Scorpion again. When I got back to (0,0) I drilled another hole. The holes had shifted by 5mm in Y and 3 mm in X. Repeating this process multiple times the (0,0) point always shifts between 0.5mm and 40mm. Never the same amount twice.
I have tried the following
• Turned off the steping motor controller and turned the two lead screws through their entire lengths. No tight spots felt
• Changed the frequency from Kernel Speed from the recommended 35,000Hz to 25,000Hz. No difference still losing zero.
• Halved the Motor Tuning Velocity & Acceleration parameters from the recommended 1200 & 300 to 750 and 150. It made no difference.
• Went through the Windows XP tuning guide on the MACH3 support site and made all setting suggested. No difference.
I am at a loss to know what else to try. Any suggestions? Thanks
Regards
Robert