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Author Topic: losing steps on z-axis (help)  (Read 5055 times)

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Offline Hood

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Re: losing steps on z-axis (help)
« Reply #10 on: September 29, 2012, 12:57:33 PM »
Set Mach to Sherline mode and see if that helps.
Hood
Re: losing steps on z-axis (help)
« Reply #11 on: September 29, 2012, 01:12:49 PM »
Set Mach to Sherline mode and see if that helps.
Hood

Just set this and have same job re-running to see what happens.
Attached is the g-code I have been trying to run.
Re: losing steps on z-axis (help)
« Reply #12 on: September 29, 2012, 01:17:53 PM »
By the time the job got from the right side over to the left side of the cut you can see where the finishing path was no longer touching to cut the wood. At that point it was almost 0.1 inch higher than where it originally started. There has been no consistency on where in the job it happens....

Offline Hood

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Re: losing steps on z-axis (help)
« Reply #13 on: September 29, 2012, 02:34:08 PM »
Have you tried swapping around drives or motors?
Re: losing steps on z-axis (help)
« Reply #14 on: September 29, 2012, 02:36:50 PM »
swapping around?? Unsure what you are asking??

Offline Hood

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Re: losing steps on z-axis (help)
« Reply #15 on: September 29, 2012, 02:49:38 PM »
Swap the drive from one axis to another, for example X and Z and see if the problem follows to the X or stays with the Z.
Hood
Re: losing steps on z-axis (help)
« Reply #16 on: September 29, 2012, 03:06:14 PM »
Will do after this completes. I am running the finishing cut in the gcode files I uploaded.
I did the Sherline check box you suggested and see if it does anything to improve. Will post status once I figure it out from results.

THANK YOU!!!!

Offline RICH

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Re: losing steps on z-axis (help)
« Reply #17 on: September 29, 2012, 05:32:44 PM »
Quote
There has been no consistency on where in the job it happens

That is why I asked if it was random. My guess is that  your Z can't keep up with your X & Y and it skips but not enough for it to completely go off on it's owne way. Had similar experience here when I started to do 3D cutting. Drove me bonkers, tried everything. In your case you may want to change the Z screw to the same as the X &Y and or get a different motor with more torque so the acceleration is improved.

FWIW,
RICH



Re: losing steps on z-axis (help)
« Reply #18 on: September 29, 2012, 05:57:10 PM »
Looks like what I might need to do....

Not sure but sherline setting is making a difference. Not sure if it is now going deeper than higher like before.... Will tell after next couple of jobs. right now going to let code finish running it paths for the night then start again tomorrow.