Gaps in gear teeth

[DavidEl 1]

I am using Cura 3.2.1 on my own printer (not an Ultimaker) to print some gears. There are gaps in the teeth and I can't find a way of overcoming this. This is definitely a slicing issue not a printer one, as you can see the gaps in the layer view. Can anyone suggest settings that might fix this?

 

Some possibly relevant settings: 0.1mm layers, 0.4mm nozzle, 0.8mm wall thickness, and others visible in the screenshot. The only change which seems to fix it is 0.4mm walls, but this is undesirable as I want two walls in other parts of the model.

 

Thanks for any help.

 

[gr5 1,236]

Try setting "fill gaps between walls" to "everywhere"

[DavidEl 1]

I tried the "fills gaps between walls" setting, but it didn't help. I'm attaching the STL in case it is helpful.

roue_motrice_-_5.stl

[smartavionics 288]

Using a line width of 0.35 for both outer and inner walls makes it fill the teeth. How well this would print using a 0.4mm nozzle I do not know.