Ruida - Wobbly lines and shapes not placed correctly

[ednisley]

@anakaine

because the belt jumps one of the forward pulleys

Another horrifying possibility surfaced in a parallel discussion: the machine has the wrong belts.

After considerable back-and-forth produced no progress, this happened:

X axis shifting in fill mode

Ed, You were so helpful when I was trying to troubleshoot my Voccell Laser Engraver that I thought you would appreciate knowing how it ended up. You will recall that I was getting “slippage” in the x direction when printing in fill mode. It did not always occur, but when it did, it resulted in characters that were slanted to the right, and the x-zero would be significantly shifted by the end of the run. The belt had been recently replaced and increasing the belt tension had no impact, sugges…

That would explain events like “pulled out of the holder overnight”.

This may be a case where you must rule out everything else before finding the culprit, but at the end you’ll know everything has been looked at and checked out. Bonus: you’ll be familiar with the guts of your machine and can recognize what’s going wrong the next time around.

@anakaine

cannot get it to have much, if any, holding torque

What current is the stepper driver set to? For that size motor, a bit over 2 A would be about right.

One of the DIP switches (usually SW4) controls the holding current:

• OFF = half current
• ON = full current

If it’s set to full current and you can still turn the motor by hand, that suggests the driver isn’t doing its job.

While it’s possible the motor has failed, it’s more likely to be a bad joint in the wiring or a driver semi-failure reducing the current. The driver is much easier to replace, so I’d start there.