Author Topic: How to Diagnose Cutting Error Problem?  (Read 537 times)

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Offline tcgliderguy

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How to Diagnose Cutting Error Problem?
« on: May 01, 2017, 12:56:30 PM »
Is there any sort of list of steps to take to diagnose a cutting error problem?  Everything seems to be fine mechanically with my 2' x 4' router, it runs smoothly, etc.  But the parts I am getting are wonky. Circles are coming out egg shaped, or the machine tries to cut a figure "6" type shape, where it starts cutting wide, and then closes in to complete the circle.  I'm running Mach3, with a SmoothStepper, and haven't had a problem with this setup in three years.  Now, things are really messed up.  I'm just hoping to find an organized approach to figuring out the problem...

Thanks in advance!


Offline RICH

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Re: How to Diagnose Cutting Error Problem?
« Reply #1 on: May 02, 2017, 09:19:48 AM »
Is there any sort of list of steps to take to diagnose a cutting error problem?

Egg shaped circles are probably do to some axis mechanical problem 
and think the figure 6 may just be a lead in.

If the machine is accurate, mechanicaly good,and proper application of gcode provided,
the piece should come out correctly.

1. Just do some actual cutting tests on "simple " things like a cicle, rectangle / square
and see how accurate the machine cutting is with tooling, material and settings you will use.

Optionaly you can just trace the gcode pathing onto a surface with the machine running but no
depth of cut for a quick visual inspection.

2. For gcode testing, see how the gcode loads and that there are no errors, step thru the coding,
or simulate if sometyhing is more complex.

I backplot the gcode and review in CAD to check pathing, but one needs backplot software to do it.