It looks a little like a layer shift, but maybe it’s not.
It can be easily reproduced.
In the Bambu Studio slicer you can see all types of lines.
After printing the “bottom surface”, the infill will follow at some point and then there will be a single layer called “Bridge”. This Layer is always 0.4 mm high, not 0.2 like all other layers.
Always with this layer there is an unsightly change to the outer wall.
I’ve already tried various things to fix the problem, the only thing that works is increasing the bottom layers so much that there is no infill and therefore no bridge-layer. Then there is no offset in the printed walls.
Has anyone had a similar problem?
What could that be about?
I think what we’re seeing might be the combination of two problems stacking on top of one another. The first is filament shrinkage due to the dissimilarities in the density of the bottom and the remainder of the vase. What typically causes this is that the denser bottom portion of the filament has more mass so it cools at a different rate. This causes one part of the model to pull against the other.
To test this theory out, try changing the wall order from the default of inner/outer to outer/inner. This will force the printer to deposit the outer wall first and thus give it time to cool and set up before the next pass.
I’m not suggesting that you increase walls for the entire model but rather use a modifier to increase the walls for those layers that make up the bottom. Do so in a manner so that hey are solid and don’t be afraid to make them 10 layers deep even if it has to invade the space inside the plate.
i just add some more walls and print them from outer to inner.
To safe material and time, you can cut your object in the prepair-tab of bambu studio.
Look for the problematic layers, cut under and over these layers and modify the walls under “Process → Objects”.
