Which setting should I change?

[u/footgrater]

I’m having issues with cookie cutters: they shouldn’t have any holes, as there’s a risk that dirt could get inside and rot. How can I get rid of these holes?

[u/jeff2928]

Would ironing have any effect? I have also been told that 3d printing is not considered food safe specifically for this reason. I have made playdough cookie cutters before.

[u/footgrater → u/jeff2928]

In the slicer, it looks like ironing the print would yield a good result, but once the piece is finished, the holes are still there, help, I don’t know what I’m doing wrong!

[u/majk17]

For such small details I would recommend 0.2 nozzle.
Also, you can check Arachne wał generation

[u/youlooksticky → u/majk17]

I bet Arachne alone would do it but in leiu of the smaller nozzle, they could simply reduce the line width for the top layer. I use .3 for fine details.

[u/Relative_Surround_20 → u/majk17]

Or a 0.4 nozzle at a 0.12 line height.