[Slicing in Cura - grayed out internal layers]

Thanks for help.

This whole model is mold, which I'm going to use with recycled cardboard to make cardboard masks.

I've already printed successfully part-fcszbs-2.stl - that is solid part of mold. Only problem is with hollow part of it. 

Since I'm not good in 3d sculpting from the scratch I think I'll contact original maker of this mold via thingiverse. 

[Slicing in Cura - grayed out internal layers]

Thanks Guys, unfortunately result is still the same.

 

[Slicing in Cura - grayed out internal layers]

Hello everyone, 

It's probably something easy, but I tried with every setup with no effect. I'm not pro in 3d printing, just started to learn things during quarantine time :)

After slicing mask mold model from https://www.thingiverse.com/thing:4280996 CURA shows only few bottom layers and few top layers. I can't slice it and print it properly. Is this problem with model file or am I doing something wrong in CURA?