Problem Hard to explain

[Bert Kemp]

I cut a 12 x 12 " sq and all 4 corners are 90°

[Bert Kemp]

I'm still stuck here does anyone else have any ideas whats going on with this laser?
I think we've eliminated Broken wires, Belts, bearings, stepper motors. What else could cause this. Dave S I ran that sq its 90 degrees on all four corners.

[Bert Kemp]

Thanks Ray Scott from Rabbit Laser and everyone else who gave me suggestions on this.
Ray had me slow down my acc rates and the quick speed rate to half of what it was. This fixed my immediate problem.

[Bill George]

Thanks Ray Scott from Rabbit Laser and everyone else who gave me suggestions on this.
Ray had me slow down my acc rates and the quick speed rate to half of what it was. This fixed my immediate problem.

Usually when you need to slow down the stepper motors to prevent losing steps especially in your case where it been working fine there are other issues.

[Dave Sheldrake]

Yup slowing it will work as I mentioned before, what it won't do is fix an underlaying problem

[Ross Moshinsky]

Take off the stepper motors and check all the set screws.

[Bert Kemp]

I thought we eliminated stepper motor problem because its not random its repeatable on different jobs

Take off the stepper motors and check all the set screws.

[Dave Sheldrake]

Usually jarring is caused the the head being tilted...three possible reasons

Belt tension
Bearings are shot
Acceleration settings are too high

[Bill George]

I thought we eliminated stepper motor problem because its not random its repeatable on different jobs

When your troubleshooting Nothing is eliminated until you find the problem. If a stepper motor is missing steps its because of too much load or friction in the device, motor, stepper driver and power supply issues. Just to mention a few...

Slowing the system down when its been working fine for a couple of years, and its working now is just a symptom of another underlying problem. It would be interesting to find another machine like yours to see if it has problems.

[Bert Kemp]

But if it was a stepper motor problem would this be random and not repeatable .
I ran 3 different jobs a couple times each and the problem happened at thee same spot in each job. I mean I don't know but if a stepper was bad wouldn't it just happen anywhere anytime