Circles are oblongs. Same with letters. Straight lines seem fine. Any ideas?
Most likely this:
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I disnt discard the bushings, but I do t recall ever seeing them. red seems noticeable. Would wear cause the problem? How many do I need to replace them?
No, they would not wear, but that carve looks exactly like they are not installed.
Pretty sure this shouldn’t be happening. I can easily rotate the left Y-ball screw manually. The left end of the gantry then moves about an inch. Is this the bushing issue?
I doubt it’s the same, but I had an issue with circular pocket skipping steps. It ended up being a software setting. Just throwing it out there: Help with gcode and skipped steps (solved, max deviation)
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I’m 100% certain my issue is the loose bar. Given that those bushing are part of the connection to the stepper motors this is probably the answer. Just waiting for 1F confirmation. And info on how many I need to buy to replace all.
What is a “loose bar”?
You can easily check if you have the motor couplers by removing the motor and remind the coupler.
“loose bar” refers to the long ball screw that has way too much play in it. The thing that is turning between my fingers in the posted video.
I’m curious how my machine could be missing these bushings as it came with the stepper motors attached. Nevertheless, it makes sense if the cut resembles this problem and I have this much play in the ball screw.
So, my question comes down to this: If I’m going to replace one, I’ll replace all. How many do I need to buy and is there an assembly guide to this replacement? I know I can count the stepper motors but are they on the other ends of the screw where it seats in the stanchions as well?
Taking my machine apart would be very very difficult, as it resides in a cabinet but I’ll make it work.
Thanks.
Update: I removed both y-axis steppers. Both had the red bushings installed, but the stepper on the left (side with too much play) spins almost freely, and the stepper on the right offers much more resistance when I turn the shaft. I don’t know what a stepper is supposed to feel like, but I do understand single-variable hypothesis testing. I have a feeling something broke inside the motor. I ordered a replacement to arrive tomorrow. I’ll update then.
I can see in the shape of the bad cuts how too much play in the y-axis would cause this, and a failing stepper motor would be the same effect as a missing bushing.
Solved:
Apparently when the controller is turned on there is some low level current flowing to the motor, which makes it very difficult to manually turn the arbor.
Yes, the left y-axis stepper was unplugged.
I’ll just leave now.
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I just upgraded to the 1Felite journeyman. While surfacing my spoil board I continue to motor failures. I have attempted to decrease the size of my servicing from 32 x 48. I reduced it a half inch length and width and I continue to get the failures.
I have reset and attempted at least six times, however it continues to fail at different points, mainly at the limits of the machine.
