Z-Axis Leans Toward Front of Printer
I am trying to print a cylinder 30mm high and 50mm in diameter with a 12mm central hole using PETG. Everything looks normal except the hole is not perpendicular to the build plate. It leans slightly along the Y-Axis toward the front of the printer. Any suggestions greatly appreciated.
RE:
Hi,
are you saying the cylinder is perpendicular to the base plate but the hole is not? If so, I'd check what the slicer is doing and whether the CAD file is correct (Prusa slicer "Preview" Ctrl-6 then use the sliders at bottom and right of display area to look inside the object).
If the cylinder is warped itself, I'd start with bed adhesion e.g. enable brims. It sounds like there is sufficient contact area, though. Printer-specific quirks, can't comment as I don't own this model.
RE: Z-Axis Leans Toward Front of Printer
Thanks for the suggestions. The cylinder is flat and perpendicular to the build plate. The central hole is for mounting the cylinder on a ground and polished shaft with a slightly snug friction fit. When I mount cylinder it wobbles just enough to be a problem.
After 3 days of trying to figure it out I am just making the hole under size and boring it out on a lathe to a good fit so I can get on with life. I have printed maybe 25 parts with different settings, sizes and orientations on the build plate. Nothing works. I think it is something with the printer as when I rotate the model on the build plate the out-of-perpendicular stays along the Y-axis. If it was the model I would think the problem would rotate with the model.
I tried doing the alignment procedure in the printer and that checks out and does not fix the problem. I was hoping someone would know of a more basic alignment to check the mechanical soundness of the printer.
RE: Z-Axis Leans Toward Front of Printer
If the outside of the cylinder is round and exactly how it should be but the hole isn't, I don't see how this could have anything to do with the mechanical alignment of the printer.
Two ideas:
The Nextruder cools better from the front than from the back, since the fan is in the front this could have something to do with it.
I don't have an idea how to minimize this effect except turning the print fan completely off.
Another thing to consider is seam placement, maybe try printing again with seam position set to random, or even add a groove to the hole and force the seam to be in there.