Recent update broke 3D printing with Cura

[Anonymous]

Fusion360 just updated on me, to 2.0.10440.   Unfortunately, this is now breaking a 3d printing workflow that had been working perfectly.

I have a body in Fusion 360 that is created from an imported SVG path, which is also scaled at import time.

Once selected, I then click 3D print, which then opens Cura (4.8).  Normally, this would work perfectly, and Cura would be ready to slice and print.

Now, however, Cura opens with a message that says:

"Scaling Object:  Auto scaled object to 10000% of original size"

I can close this prompt, but while I see a shadow in Cura, there's no object present.  And if I click "Slice" -- I get the error "unable to slice"

Anyone else have 3d printing broken following this recent update?

[karina.harper]

Hi @Anonymous 

In the save as mesh dialog, try changing the units to mm. I see the behavior you're describing if I have the unit set to inches.

Cheers,

Karina

[JTHorrigan]

just a note to say this is still occurring in the latest update.  Just opened a file I printed from in the spring with no issue (inches), now Cura autoscales it 10000%.  Switched units to mm and it is OK.  Seems Fusion assumes everything is in mm when exporting 3MF or STL, regardless of the actual unit in use.

[markus.fruehauf]

@JTHorriganit' the ohter way round at least for STL. STL is a unitless format and Cura expects STLs to be in mm. When you 3Dprint/export as STL you can define in which "units" it should be written (no matter what the active units are). For example you create a box of one meter and you export it as STL with unit "meter" it will write a STL with a 1x1x1 box, if you select cm it will write a 100x100x100 box and if you select mm it will write a 1000x1000x1000 box.

When you send to Cura and use STL always use mm, which means everything will be written im mm, no matter what the active units are. But I would recommend to use 3MF, because 3MF knows the units, that means no matter which units you use for export, the box will always "stay the same size" for Cura.