I currently have 5 V3's in operation. I have been upgrading them to the Duet Wifi controller, and currently have 3 running Duet and 2 running rambo.
I am having a problem with layer shift on one of the machines converted to the Duet. I am printing the same files on all printers with the same filament and settings, and the problem is isolated to the single printer.
- The problem only occurs when the print is spread out over a large portion of the bed, almost from edge to edge. If I print one or two smaller prints, there is no layer shift at all.
- The issue is not related to the prints being centered either. I can print a single print anywhere on the bed, even at the very edge, and it will be fine, but then if I fill the bed with prints, the layer shift comes back. Look at the photo of the two pieces that were printed together. You can see that the layer shifts stopped once the printer was done with the short piece and was only printing the taller piece.
- The layer shift appears to be periodic in nature, not random.
Things I Have Tried:
- Replaced all three stepper motors thinking the bearings were going bad in one of them
- Replaced all three belts thinking the teeth were skipping periodically
- Tightened the grub screws in all three pulleys
- Replaced the entire HE280 hotend
- Checked for overheating of the motors and driver chips, all can be touched without burning yourself
- Checked my acceleration and jerk settings compared to the old rambo setup. The rambo was actually more aggressive.
- Replaced the power supply, heated bed, and glass surface.
- Again, I have two other V3's with Duets that I have built, and they do not have the problem
If it matters, I am running S3D. I have yet to upgrade the HE280 to work with Duet calibration, so I am doing it manually which is slow but it works. I am printing PETG at 275F with 60F bed.
As you can see, I have ruled out the motors, belts, controller, print file, hotend, wiring, , bed, accel, and jerk settings.
If anyone has any ideas please let me know, I feel like I have been looking at this problem for too long and I can't see the answer that is right in front of me.
