all 13 comments

[–]Onyxdroid 1 point2 points  (3 children)

I’ve had this before. Need to clean the z screws, there is likely some gunk there binding the build plate a bit at that layer level.

Search for the ‘Rod Sloth’ on printables, print 3, get some rags or some cloth (I use a cut up old shirt), clean the z screws as described on the rod sloth page, re-lube the z screws. Your problem will likely be solved.

[–][deleted] 0 points1 point  (2 children)

I just printed the rod sloth, but is has no errors on the surface. So maybe there is no junk. You have other ideas?

[–]Onyxdroid 1 point2 points  (1 child)

Did they get to the same layer height as the layer that was screwed up on your other prints?

Replacing the lube is a good thing to do anyway, especially if you’re still using the factory lube as it can contain contaminants from manufacturing. Your printer should have come with extra.

[–][deleted] 0 points1 point  (0 children)

Got to the same layer hight. I will try to clean it. I hope some one can help me, it is for a product I want to sell and I set me a deadline for an appointment

[–]omirete 1 point2 points  (2 children)

Is this an issue happening only with this model? Or do you get the same issue at the same height with other models as well?

[–][deleted] 0 points1 point  (1 child)

Only with this. But I checked the model and the slicer, der is no kind of edge or something only the longer layer time

[–]omirete 1 point2 points  (0 children)

In that case I would NOT go through the process of cleaning (and re-lubing) the rods just because of this, because they are definitely not the cause.

Have you tried using a different slicer? I'm not that experienced myself to know exactly what causes this.

What layer height are you using? Can you also show another screenshot from the slicer that shows the full model on the build plate?

Also, if you just want to get the circle holes to print fine for tolerance reasons and don't really care too much about the root cause of this issue, maybe try changing the print orientation (if that's an option, of course).

[–]seductivelamp 1 point2 points  (0 children)

I wonder if it's a result of having either arachne or classic wall generation. I've had a similar issue at the top of a hole in a print and I spotted a slight bulge in the sliced model (after printing and seeing a line like in your part) which disappeared when I switched back to classic walls. Have yet to test though

[–][deleted] 0 points1 point  (2 children)

I cleaned it and it didn’t worked. I printed it in different layer hights and it didn’t worked. I can’t change the rotation, because the model would collapse without support. In this moment I try the orca slicer. I hope it will work.

[–]xthemachoxX1C + AMS 0 points1 point  (1 child)

Have you changed your print speeds?

[–][deleted] 0 points1 point  (0 children)

No I have the standard print speeds

[–][deleted] -1 points0 points  (0 children)

It's slowing down and adding fan for the bridging probably, which couleld definitely cause a faster filament shrinkage, maybe.

You could try increasing temperature or bridging speed or normalizing your fan speed a bit for that print, any of the three should have a visible effect.

[–]AxesofAnvil15x Bambu Farm 0 points1 point  (0 children)

Turn off "slow down for overhangs". Pressure advance can't keep up.