Layer shifting problem  

RE:

please attach 3mf file and if you print something else this does not happen right

RE: Layer shifting problem

and try flip the print so the bit thats shifting is on bed and the bit on bed is in the air

RE: Layer shifting problem

That looks like the usual symptom of a loose motor pulley. Check the grub screws are tight and aligned to the flat on the shafts. It’s common for them to loosen over time if they aren’t done correctly. Either that or belt tension. 

RE: Layer shifting problem

Posted by: @neophyl

That looks like the usual symptom of a loose motor pulley. Check the grub screws are tight and aligned to the flat on the shafts. It’s common for them to loosen over time if they aren’t done correctly. Either that or belt tension. 

If this was the case, wouldn't I see this problem on every print?  As I mentioned, It's only happening on this one type of wall (4 instances).  I will check though.

Thanks

Bill Lugg

RE: Layer shifting problem

Posted by: @hello

please attach 3mf file and if you print something else this does not happen right

Here you go.

Bill Lugg

RE: Layer shifting problem

? dont see file try put it into a zip then upload

RE:

Posted by: @hello

? dont see file try put it into a zip then upload

Stall21BackWall-3mfFile

OK, let's see if this works...

Note that it's not the same wall, but of the same family that's having problems.

Bill Lugg

RE: Layer shifting problem

yes got it thanks

RE: Layer shifting problem

are you printing theme all with supports

RE: Layer shifting problem

Posted by: @hello

are you printing theme all with supports

 

Yes, I'm using the Paint on supports and the Smart fill tool to place supports on the window sills.  The 3mf file should show that. Does the STL file come with it?  if not I can send that too.

FWIW, I've inverted one of the walls and it's about 4.5 hours into the 6 hour print - past where it shifted in the photo and so far there are no problems.  It hasn't reached the top of the window opening yet, so the jury is still out, but it looks promising.

I'll report on it's completion to tomorrow.

Also, I did check the grub screws and they are tight.

Bill Lugg

RE: Layer shifting problem

ok thats good that is looking good 

RE: Layer shifting problem

let me know how it went after its finished good luck

RE: Layer shifting problem

any luck?

RE: Layer shifting problem

Here's a shot of the print from last night.  The edge at the bottom of the photo was on the build plate.

Note this time the "joggle" is at the top of the wall.  After studying this I'm noting that it's actually expanding at the top of the windows as you can see it spreading out a bit at both edges above the windows.  It's not as bad as before, but it's not great.

All I did was invert the wall and reapply supports to the overhanging edges (the underside of the header beam and the top edges of the windows).  No other changes were made to the slicer file.

Thoughts?

Bill Lugg

RE: Layer shifting problem

Still not the best ant chance you can print a small cube to make sure it's not the printer thanks

RE:

Posted by: @hello

Still not the best ant chance you can print a small cube to make sure it's not the printer thanks

Yes, I certainly can, but I'm pretty sure it's not.  As I believe I've said previously, I've been printing other walls and other objects interspersed with these and they haven't experienced any problems.

FWIW, I'm currently printing another copy of the wall where I've increased the infill to 25% to see if that makes a difference.  It's got about 1.5 hours left to finish.

How big a block are you thinking?

Bill Lugg

RE: Layer shifting problem

20 m. By 20 mm I know you said it doesn't do it on other walls but I would still like to rule this out thanks fingers crossed for this wall

RE: Layer shifting problem

OK, I'll do the block when the wall is finished.

Bill

RE: Layer shifting problem

Perfect