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Hello all,
Newbie CNC'r here, so feel free to criticize!
I have a Foxalien 4040XE with Dewalt 611. I've noticed a few times now during my profile cut (usually circles), all of a sudden it jumps off the toolpath and carves into the finished work (picture attached). This has happened now with both a 1/4" UC and DC bit, as well as an 1/8" UC. It seems to occur on either each side of the circle (closest to the y axis rails). I've tried slowing down feedrate and decreasing doc, all with convention cutting. The picture is from a 1/4" DC at 35ipm, 0.12" doc, conventional cut in pine.
Some additional info:
Ideas on what could be causing this? Any feedback is appreciated.
Newbie CNC'r here, so feel free to criticize!
I have a Foxalien 4040XE with Dewalt 611. I've noticed a few times now during my profile cut (usually circles), all of a sudden it jumps off the toolpath and carves into the finished work (picture attached). This has happened now with both a 1/4" UC and DC bit, as well as an 1/8" UC. It seems to occur on either each side of the circle (closest to the y axis rails). I've tried slowing down feedrate and decreasing doc, all with convention cutting. The picture is from a 1/4" DC at 35ipm, 0.12" doc, conventional cut in pine.
Some additional info:
- No problems with losing steps during pocket or engraving cuts - returns to zero nearly perfect every time
- Running Candle GRBL control via laptop. I switched to running via offline controller, so the laptop is out of the picture, and have completed some profile cuts successfully with an 1/8" UC, coincidence??
- All belts are at 5lb/in
- All screws/collars are tight. Top backlash washer on the z-axis was slightly loose during the picture shown, not sure if that is the root cause?
- Doesn't seem to fail on the first pass
- Workpiece is held with the CA glue/tape method as well as clamps (it does not move)
- Spindle/router is not perfectly perpendicular to the wasteboard - seems to have about a 1/32" tilt in the y-direction
Ideas on what could be causing this? Any feedback is appreciated.
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