Not getting "multi-part object detected" pop up, and parts re-aranged
I've been creating multi-part/component/body .3mf files for a while in Fusion 360 and have been used to getting the prompt:
With this fusion 360 test cube:
https://a360.co/424m01y
When importing the .3mf file it ignores the placement of the bodies and arranges them:
Which is really wierd... Trying to figure out if it's a change in Fusion or Prusa Slicer 2.7.1?
Another file I created works fine/as expected:
I get the pop-up, and the bodies are placed where they should be.
RE:
And oddly enough when I change from an XL profile to a MK3.9 profile. It still doesnt give the expected pop-up, but it doesn't re-arrange the parts:
RE: Not getting "multi-part object detected" pop up, and parts re-aranged
PS treats importing models differently depending on whether your printer has the ability to multicolor/material print or not.
The MK3.9 cannot do multi-things so it just imports things as is, no prompt.
The XL can multi-thing print, so you get a choice:
If you choose No at the prompt then the different parts are treated as different parts, get separated out, and moved around.
If you choose Yes at the prompt then the different parts are kept in position as if it were a single part for multi-thing printing.
XL-5T, MK3S MMU3 || GUIDE: How to print with multiple-nozzlesizes do read updated replies || PrusaSlicer Fork with multi-nozzlesize freedom || How Feasible is Printing PETG for PLA supports on XL very
RE: Not getting "multi-part object detected" pop up, and parts re-aranged
Understood @baconfase, more a point of difference. What's interesting is that there is NO Pop-Up for that .3mf that I attached. Designed the same as other things that I have designed which do trigger a pop-up identifying it as multi-part, and asking..
It's the no pop up that I think is the issue... Not sure why it's not popping up at all.
RE: Not getting "multi-part object detected" pop up, and parts re-aranged
The .3mf file is here:
https://drive.google.com/file/d/1hOCof3EMCO9GHudclQoz5p9lz8QZT_93/view?usp=sharing
RE: Not getting "multi-part object detected" pop up, and parts re-aranged
OK, I have a way to reproduce the Phenomenon. And it's a strange one.
A box or cylinder within a cylinder that share a common top height seem to never be recognized as Multipart Objects. I'm going to file it as a bug in Prusa Slicer until they tell me that it's Fusions fault 😛
Steps to reproduce:
Create a Sketch
Draw a 20x20 square
offset it by -1mm. You now have a square within a square.
Finish the Sketch
Extrude both parts (inner and outer) the same height (say 5mm), as "New Bodies". When done you should have 2 bodies.
Save the fusion design (to give it a name).
"Save as Mesh" and choose .3mf for the type.
This will produce a .3mf that is not recognized as a multi part (no pop-up). Bodies same height, nested within the outer object.
Now go back to Fusion.
turn off one of the bodies from being visible.
Extrude the still visible body 1mm up (Join). You should still have 2 bodies because the other one is not visible.
make the hidden (and now shorter) body visible again.
"Save as Mesh" and choose .3mf for the type.
Now here's another interesting part. If you saved it as the same name, and click "Reload From Disk" in Prusa Slicer, it wont see the updated file as Multi-Part. But if you trashcan/delete all and re-add it it shows up and is recognized as a multi-part .3mf.
Doesn't seem to matter if the inner or outer is taller. or if they share the same xy center. Just if they are the same height, and within each other's boundaries, Prusa Slicer doesn't see them as Multi-Part.
RE: Not getting "multi-part object detected" pop up, and parts re-aranged
Just posted on your github issue but you might want to read the already open issue https://github.com/prusa3d/PrusaSlicer/issues/11547 sounds very similar and possibly the same root cause.