I don’t like pouring in sand during the print. It’s too easy for the fans to blow it all over.

I use gyroid infill and leave a hole in the bottom. Then pour in casting plaster after the print is removed from the bed. Let dry and sand smooth.

Ahem. That would be an “Ultra Maroon!” https://youtu.be/HuxJqIs2a-Y

Model Railroading. I went several decades without a layout. Then for whatever reason, I just recently started building an N scale railroad. I’m having fun remembering oops skills and learning new techniques.