The Program is not slicing correctly

[Artsyitall 0]

I sculpted a mouse head for a project in Blender, but whenever I slice it the program refuses to print parts of the print, as seen in the picture. I spent my time on sculpting it and I don't want it to go to waste, please help!

[GregValiant 1,415]

The model has errors in it but that doesn't mean it has to be scrapped.  The errors might be because surfaces have their "normals" flipped or it might have open edges (non-watertight) or it might have holes (like appears to be going on one the ears).  Cura can't figure out what is going on so those areas with errors can't slice.

 

You can go to the Cura MarketPlace and load the Mesh Tools plugin.  It has analysis capability and a couple of repair utilities that are basic but work for a lot of models.  It has other capabilities as well.

You can try to fix them in Blender (but I don't know Blender).

MS 3D Builder is bundled with Windows and has a good repair utility that runs automatically when you load a file.

There are also on-line STL repair utilities like https://formware.co/OnlineStlRepair.

Some files just can't be fixed though.  At that point you would need to try again in CAD.

[globalns 0]

I saw another user having the same problem on Reddit. 

 

So I tried it with a similar model from Cults3D and also had a missing layer problem.

 

https://cults3d.com/en/3d-model/game/kobold-wizard-tabletop-miniature-m3dm

 

I checked it with the Mesh Tools plugin and it not report any problems with the model.

 

 

[GregValiant 1,415]

Knife edges and feather edges are always tough because they taper down to near nothing.  Cura can't fit the "Line Width" in there and so ignores that area of the slice.

There are two new settings in the Walls section that might make a difference.  "Split middle line threshold" and "Add middle line threshold".  Try setting them both to 50% and see how it does.

 

Load that model and use the Cura "File | Save Project" command and post the 3mf file here.  Without seeing how you have it set up it's really impossible to tell what changes might make a difference.

 

[globalns 0]

I just tried it in PrusaSlicer and it was about the same, so it's probably the model I guess.