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Having A 3D Printing Problem  

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Orin
 Orin
(@orin)
Active Member
Having A 3D Printing Problem

It is a great 3D printer but I am having a problem with PrusaSlicer-2.9.2.

I have been trying to start printing a P47 item from 3dlabprint.com.

I have attached one of the files for the P47 and PrusaSlicer-2.9.2 imports a .3mf file and doesn't print it properly.

How can I set PrusaSlicer-2.9.2 to make it use that kind of files??

Look at the attached photos and the software.

 

Posted : 30/08/2025 4:00 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

Another photo - 

Posted : 30/08/2025 4:02 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

 

Posted by: @orin

doesn't print it properly

Give us a clue as to what it is doing wrong!

Prusa slicer uses 3mf natively, but 3mf files include printer configuration info which could be the issue but without details of the problem it is pretty difficult to diagnose 

Posted : 30/08/2025 4:08 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

But you still haven't told us what the problem is

If you trying to attach a 3mf you need to zip it first

Posted : 30/08/2025 4:16 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

Wish I could attach the .STL file but I cannot do that.

Don't know why PrusaSlicer-2.9.2 changes the way the file normally is.

 

Posted : 30/08/2025 4:18 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

 

Posted by: @orin

Don't know why PrusaSlicer-2.9.2 changes the way the file normally is. 

It doesn't.

Posted : 30/08/2025 4:23 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

I don't know how to change the .STL file to a ZIP file

Posted : 30/08/2025 4:24 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

Assuming Windows: right click on the file and select "compress to zip file"

Posted : 30/08/2025 4:27 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

Here is how the 3D print looked - 

Posted : 30/08/2025 4:28 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

I looked for that but didn't see how to do it.

Posted : 30/08/2025 4:33 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

Ok, I'm out

Posted : 30/08/2025 4:34 pm
Crab
 Crab
(@crab)
Honorable Member
RE: Having A 3D Printing Problem

As posted before.. put both the STL version and the 3MF version of the file into a folder. Search the internet for a way to zip/compress that folder into a single file that has a ".zip" extension  and attach it to a post here. Find out what printer the 3MF was designed for and include that info. It will be somewhere in the documentation for the P47 model. Then people can help.

Posted : 30/08/2025 5:56 pm
Tim
 Tim
(@tim-24)
Member
RE: Having A 3D Printing Problem

This seems like an older issue where certain model airplane print designs were generally incompatible with basic Slicer setting. Prusa and a few here did some work and came up with a way to print the files successfully. Its been way too long to remember the details, but do a search for threads about model airplane prints - probably the Mk3 and Mk3S forums.

It had something to do with non-contacting extrusions fooling the slicer for internal vs external walls. Minimum thicknesses, etc.

Posted : 30/08/2025 6:52 pm
Tim
 Tim
(@tim-24)
Member
RE: Having A 3D Printing Problem

https://forum.prusa3d.com/forum/prusaslicer/prusaslicer-2-4-0-alpha1/#post-495613
Support for 3DLabPrint airplane models
PrusaSlicer newly supports slicing of 3DLabPrint airplane models. These 3DLabPrint models were designed to be sliced with Simplify3D with a single perimeter and no infill to produce a single perimeter wing surface reinforced by single perimeter ribs. From the solid geometry point of view, these models contain overlapping bodies, thus they are not valid solid models. After the model is sliced, polygons in each layer are merged and further processed with a Clipper library by most of the FDM slicers, including PrusaSlicer, Cura and most likely by the closed source Simplify3D as well, however the slicers differ in what fill rule they apply by default. Simplify3D always uses the Even-Odd fill rule, while Cura and PrusaSlicer use the Positive fill rule by default. To allow slicing the 3DLabPrint models, PrusaSlicer implements a new "Slicing Mode" option, allowing one to switch between the "Positive" (default) and "Even / Odd" rule. Yet another new "Slicing Mode" option "Close Holes" makes PrusaSlicer to fill in all internal structures #3062#3708.

Posted : 30/08/2025 7:02 pm
Orin
 Orin
(@orin)
Active Member
Topic starter answered:
RE: Having A 3D Printing Problem

I am still having a problem using the PrusaSlicer-2.9.2 trying to print a real way like is in the photo attached:

 

Posted : 31/08/2025 7:43 pm
Tim
 Tim
(@tim-24)
Member
RE: Having A 3D Printing Problem

You'll need to dig back through those earlier threads to find the actual settings people ended up using that were important for the thin walled plane models; and find someone here in the How Do I Print This forum that's still using Prusa Slicer to help guide you through.

I'd also recommend you read up on the 3dLabPrint site for any current slicer recommendations. Go to the person who owns the model you downloaded and ask them for advice, what they use, to slice the part, etc. It isn't uncommon to have one slicer for general use and another for specific tasks.

ps: on Windows PC's, right click the stl file and select Compress to ... and use the ZIP format. You can do the same with the Slicer save, the .3mf, and post it, which is better than the .stl.

Posted : 31/08/2025 7:59 pm
JP Guitars
(@jp-guitars)
Reputable Member
RE: Having A 3D Printing Problem

https://forum.prusa3d.com/forum/prusaslicer/slicing-rc-plane-wing/

Posted : 31/08/2025 8:57 pm
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Tim
 Tim
(@tim-24)
Member
RE: Having A 3D Printing Problem

Slice Gap closing radius and even/odd slicing from Cura - I was the "--" in that conversation though nothing of substance is coming back to me. Follow the subsequent threads, too. Too bad the images went away in the website refresh way back when: a lot of information was lost. 

Posted : 01/09/2025 3:28 am
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