Do not lift the nozzle/create seams where there are too few layers beneath that position.
 
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Do not lift the nozzle/create seams where there are too few layers beneath that position.  

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cryonics-01
(@cryonics-01)
New Member
Do not lift the nozzle/create seams where there are too few layers beneath that position.

In this example, the position of the seam is above only a few layers. In this location, the nozzle lifts multiple layers up higher than the next layer it is about to print. This happens because there is not enough layers beneath the seam to anchor them in place. The nozzle then hits these raised layers and removes the object from the bed. The issue was slightly resolved by changing all seam positions to the rear and orienting the object accordingly. Unless there is a specific feature within Prusa Slicer that I am unaware of or unless there is an issue with my specific printer that I am unaware of, I believe there should be an option to prevent seam positions from being located in a position where there are only a few layers. The software should automatically avoid lifting the nozzle where there are too few layers beneath it when printing everything including seams and infill. The option could be listed in the seam position settings and be called "Avoid Overhangs" or something, but it should affect anything being printed above the overhangs too. Setting seam position to the rear only affects the perimeters and it doesn't resolve the issue for other areas of the object depending on its orientation. The seams and the locations where the nozzle is lifted should avoid overhangs but also not continuously be raised in the same spot. SO the combination of anew option such as Seam Position: Avoid Overhangs and Nearest or Seam Position: Avoid Overhangs and Random would be ideal. You might as well let the user set how many layers is considered an overhang for this particular setting as well. Thank you.

 

 

Posted : 19/05/2022 9:29 am
Neophyl
(@neophyl)
Famed Member
RE: Do not lift the nozzle/create seams where there are too few layers beneath that position.

Are you trying to request a new feature for Prusa Slicer ?  If so then here isn't the place for it.  You need to raise them here https://github.com/prusa3d/PrusaSlicer/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc on Github.

However from a cursory search of existing issues that feature request/issue was already raised https://github.com/prusa3d/PrusaSlicer/issues/3243   back in 2019.  So go add to that request to raise its profile.

Posted : 19/05/2022 9:59 am
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