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Avalon
(@avalon)
Member
Suggestion for new features

I have two suggestions for new features in Prusa Slicer:

Top Perimeters: Usually I print stuff with 3 or 4 perimeters for rigidity but at the same time I want the top surface be as nice as possible. Now if I print with 4 perimeters, all four can be seen on top surface while top infill is Hilbert, for example. It would be nice to have ability to print only one perimeter on top surfaces while internally the object has more. Like a cartoon looks better with thin outlines. Kind of vase mode + normal infill for top surface(s).

Paint-on infill density: It would be a very good feature to be able to apply different infill densities in different locations of parts. This way I don't have to design unnecessarily thick parts or add more infill to the entire print if I wanted a certain part of the object to be stronger.

Best Answer by JoanTabb:

I frequently use height range modifiers to change the number of perimeters on the first layer and the last layer. especially, if the layer has features like lettering on it.
you can change infill density with modifiers. apply a modifier to the area you wish to revise, then set the parameters that you would prefer for that section.  modifiers  can also be primitive shapes, (added within Prusa Slicer) (BOX, Cylinder, Sphere, Slab or you can create custom shapes in your 3D design Program, and import them into prusa slicer using the Modifier>Load function to load a modifier STL)

regards Joan

Posted : 29/08/2023 7:47 pm
fuchsr
(@fuchsr)
Famed Member
RE:

Sounds like a reasonable idea. You can get the same effect today with a bit more effort by using a height range modifier, set start-at-height to height of object minus layer height and add perimeters equal 1 to the HRM.  Of course that won't work if the model has a more complex top surface structure.

This post was modified 6 months ago by fuchsr
Posted : 29/08/2023 9:06 pm
Avalon liked
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Suggestion for new features

I frequently use height range modifiers to change the number of perimeters on the first layer and the last layer. especially, if the layer has features like lettering on it.
you can change infill density with modifiers. apply a modifier to the area you wish to revise, then set the parameters that you would prefer for that section.  modifiers  can also be primitive shapes, (added within Prusa Slicer) (BOX, Cylinder, Sphere, Slab or you can create custom shapes in your 3D design Program, and import them into prusa slicer using the Modifier>Load function to load a modifier STL)

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 29/08/2023 10:31 pm
Avalon liked
Avalon
(@avalon)
Member
Topic starter answered:
RE: Suggestion for new features

Thanks for advice, these solve the problems I had. The suggested features would likely make it easier but the current abilities with these tricks can certainly do the job.

Posted : 30/08/2023 1:18 pm
Neophyl
(@neophyl)
Illustrious Member
RE: Suggestion for new features

The single perimeter feature has already been requested at the proper place (The Prusa Slicer github).

For example the single perimeter top layer (which was added to Super Slicer ages ago) https://github.com/prusa3d/PrusaSlicer/issues/7986   - apparently this is on the planned to do list already if you read the issue.

Not sure how exactly you suggest painting the inside of a model as the paint tools work by defining exterior surfaces.  There have been similar requests in the past but they were all closed by the devs after the OP was pointed to the modifier meshes/tools to achieve the variable infill just as been been suggested here.

Posted : 30/08/2023 2:14 pm
Avalon
(@avalon)
Member
Topic starter answered:
RE: Suggestion for new features
Posted by: @neophyl

The single perimeter feature has already been requested at the proper place (The Prusa Slicer github).

----8<---

Not sure how exactly you suggest painting the inside of a model as the paint tools work by defining exterior surfaces.  There have been similar requests in the past but they were all closed by the devs after the OP was pointed to the modifier meshes/tools to achieve the variable infill just as been been suggested here.

I have/had no idea how github works so I posted the request here.

There is no need to paint the inside, just the outside like support enforcers. For example, painting red the outer surface of a hook at the weakest point creates solid infill, painting it yellow doubles the overall infill density (20% => 40%) at that point and painting it green adds 50% (20% => 30%). Or maybe even a gradual infill. I can't remember which one of the 3D-printing guys, Angus or Stefan or someone else, created a python (?) script that creates gradual infill where innermost part of the object had lowest infill percentage.

Posted : 30/08/2023 7:00 pm
Stefan
(@stefan-3)
Estimable Member
RE: Suggestion for new features

To increase the strength of parts, the most effective way is to increase the wall thickness of a part.

Because it fits in this thread, please support my suggestion #7459 on github:

https://github.com/prusa3d/PrusaSlicer/issues/7459  

Posted : 31/08/2023 12:11 pm
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