Hello Everyone,
I would like to ask for help in understanding a phenomenon.
More than a year, I use a P1S printer with AMS.
I printed several parts and models, so I am not a newby in the 3D printing world. Recently I used several other brands’ 3D printers.
A model is given, with a simple cap on the outside, with a completely covered special internal thread on the inside.
As you will see, there is a strip on the outer wall that, if cut with a plane, would be equal to the inner top of the cap.
My question is, can this error be removed somehow?
In terms of material, it is eSUN black ABS+.
When I reach this layer height, the printer first closes the filling with a bridge, then draws 2 “quick” full layers on top of that, and then closes the surface with a monotonic layer.
After that, I have no quality problems with the other layers.
(My tip is that by the time the printer continues with the other sidewall layers, due to the slow printing of the bridge at this layer height, the layer has already cooled/colder, so it is no longer able to print a homogeneous surface, i.e. it becomes visible.)
Hi AwakeProphet
I have the same issue since day 1.
Some models, that I had way less of an issue with, was either…
- 999 Walls, so there is no filling
- 999 Bottom/Top Layers, so there is no filling
- 100% Infill, so there is no filling (duh)
= going for 100% fill, if that’s not too much of a waste
(4.) What sometimes made it way less worse is shown in my professional paint sketch: (cut section, vertical)
Basically a smoother transition from floor<>walls
Also try to print 1 object at a time max, which seems to be the case already. Switching from Layer>Layer to Object>Object counts as 1 object after another in my books.
Maybe not the full solution you were craving for, but eventually it’s at least a stress relief.
Take care:)
EDIT: Some of my filament looks different depending on how fast it was printed. I once had strips all over stuff because of that. Temps can change the appearance too as far as I know. Maybe a Benchmark for Speeds could be a good source for you. You could also adjust the speeds of walls etc down to “Bridge speed” and hope for the best.
It’s been discussed extensively. It’s not an error that the printer is making.
As you print, each printed layer starts to cool off. As it cools, it shrinks a little. If you’re printing at the same “rate” each layer, the amount of offset between one layer and the next caused by this shrinkage is uniform and you can’t see it. But if you go from printing layers fairly quickly to printing layers much more slowly, like for instance when you go from printing a layer that’s mostly infill to one that’s a top surface, the amount of shrinkage that occurs while the longer-printing-time layer is being printed is going to be quite a bit more than it was on any previous layer. So the layers that get printed next, after the slow layers, will have a visible discontinuity.
Layer time, extruder temp, chamber temp, build plate temp, fans, infill type and percent, wall count, wall printing order, and the shape of the object itself all have an effect. You can minimize but probably not eliminate the issue completely by experimenting with printing parameters and the model’s orientation. No one set of rules to follow, solution has to be arrived at empirically…
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