possible layer shift?
Hello all,
I printed the attached yesterday and it has a sort of problem.
It printed normally for the most part, but for a few layers it got swollen in the Y axis both at the start and at the end of the axis. Curiously, it did that on the layers that interface between the item and the supports.
I don't really care for the layer shift, I will use the item anyway. I'd just like to know if there's something I could have done so this had been avoided. One thought I have is that I should have printed the item upside down, but that doesn't guarantee that the problem is solved.
I have attached the 3mf file and a couple of pictures. The pictures are't that great, but I hope they show the problem well enough.
I'd appreciated any insight/advice. Thanks for your time.
Please save your project as a .3mf file
Files > Save Project as
Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.
Cheerio,
RE: possible layer shift?
Hi Diem, thanks for taking the time to respond. The 3mf is the link under the pictures, in the OP.
Curiously, it did that on the layers that interface between the item and the supports.
Which is also the point at which you changed the thickness of the walls.
7 perimeters is a lot, it means the walls must be solid leaving no inner fill space in which to hide variations in skin thickness so that other features, eg., the horizontal structure which constrains the placement of extrusions, shunt some of them sideways. You might also try the Classic perimeter generator 'though Arachne should cope here.
You may find that reducing the number of perimeters to 2 or 3 will be enough to allow the slicer to correct itself.
Organic support would not be my choice for this sort of part, snug might be better. Likewise gyroid fill isn't ideal here, I would use cubic fill.
Cheerio,
RE: possible layer shift?
Curiously, it did that on the layers that interface between the item and the supports.
Which is also the point at which you changed the thickness of the walls.
7 perimeters is a lot, it means the walls must be solid leaving no inner fill space in which to hide variations in skin thickness so that other features, eg., the horizontal structure which constrains the placement of extrusions, shunt some of them sideways. You might also try the Classic perimeter generator 'though Arachne should cope here.
You may find that reducing the number of perimeters to 2 or 3 will be enough to allow the slicer to correct itself.
Organic support would not be my choice for this sort of part, snug might be better. Likewise gyroid fill isn't ideal here, I would use cubic fill.
Cheerio,
I thought the number of perimeters would be reduced in case they didn't fit, thanks for the info!
If you don't mind me asking, why would cubic fill be better here, and in the same spirit, why would snug be better?
RE:
I thought the number of perimeters would be reduced in case they didn't fit, thanks for the info!
Even Arachne, which can vary the width, can only add or remove an extrusion so rounding occurs.
why would cubic fill be better
Slightly stiffer, use gyroid for resilience.
why would snug be better?
Rough guide: Organic for organic or rounded prints.
Snug for almost all practical parts.
Grid for tall prints.
Cheerio,
RE: possible layer shift?
At first glance, looks like a bulge (buldge). Not really resolved problem, you can find long threads on the topic here.
Though, in this case, Diem is right here. And I would expect typical bulge pop out, when you apply his fixes 😁
On the infills, I prefer cubic over grid, it has same speed, it is supposed to be stronger, and doesn't care the printer bump over extrusions.