Variable and differential printing height to improve shell thickness and strength
I have to print (FDM) an object with a slightly bent top surface. Using the variable printing height results in a nice stepless surface but the outer shell becomes very thin and weak. Even though the number of top-layers is set to a high value. I'm looking for a possibility to have a combined layer thickness (could call it differential) where the inside is as thick as 0.2mm but just at the outer part of the shell the layers are printed in smaller steps comparable with the variable height settings. If the outer perimeters (so with the thinner layers) are printed first, followed by the solid infill with thicker layers there would be no risk for collaps of the extruder against the previously printed inner (thicker) extrusions. I'm not sure if this option is already present (have not found it) or if it was discussed before, anyway I have not found anything on the forum.
I tried to catch the idea in the attached graphic, of course the height should be a factor 50 smaller...
Wonder if this would be possible...
Thanks,
Mike
Version: 2.5.0+linux-x64-GTK3
Build: 202209060725
Operating System: Debian Linux
System Architecture: 64 bit
System Version: Linux 4.19.0-12-amd64 x86_64
RE: Variable and differential printing height to improve shell thickness and strength
Hi. This is mainly a user to user forum. The devs rarely post here. All feature requests and bug reports need to be made at the Prusa Slicer github. Items posted there get given an issue number and are then tracked and seen by Prusa staff.
However this suggestion has been made multiple times. I believe the current open issue relating to it is https://github.com/prusa3d/PrusaSlicer/issues/402 As you can see issue 402 was posted July 2017. So its been around awhile. I think the best exampled version is https://github.com/prusa3d/PrusaSlicer/issues/8386 but it was closed as a duplicate of 402.
RE: Variable and differential printing height to improve shell thickness and strength
Thanks @neophyl, for pointing to the Github developers site. As a regular user I first was just interested if I just missed a setting or that it does not exist as yet.
Reading the github pages I have to conclude that there is some overlap, but my question was if it is possible to combine fixed internal layer height with variable external layer height. It would not only highly improve printing time, but also strength of the object, meanwhile preserving the outer surface detail.
Conclusion for now seems to be, unfortunately, it is not possible as yet and there are no fixed plans to implement this.
Version: 2.5.0+linux-x64-GTK3
Build: 202209060725
Operating System: Debian Linux
System Architecture: 64 bit
System Version: Linux 4.19.0-12-amd64 x86_64