3D Print of lawn striper rollers

I used Creality Print on a K1 Max. In the splicer software, I set the print to pause before it printed the top layer closing it off. I then filled in with sand. You want to make sure to put something on top of sand so it doesn't start blowing sand when the fans kick on. I used a layer of play-doh then resume the print.

You could also drill a hole and fill with sand then cap it off.