Do you have any experience doing so?
I have a project coming up where I would like to print a large object and fill it with sand and resin.
Sand, as we all know is coarse, rough and irritating and it gets everywhere. So it’s good filler material.
Afterwards I want to solidify it by adding resin, hoping that it gets everywhere as well.
What other materials are usable? Perhaps concrete but it can’t really dry inside a printed object right?
The infill should be Gyroid with 10% with at least 3 perimeters IMO. Would something like tree infill work as well? Or removable infill? I’m not sure how to get a slicer to do that though.
I intend to build parts for a CNC machine so I value weight and rigidity in this project.


Ives tried to use resin to fill prints and it ended up leaking all over and making a mess. I’m sure with the right geometry and enough perimeters it can be done, but keeping the walls sealed is an important consideration.
My preferred approach to weighting models is to design in holes for bearing balls and press them in, with optional (and lightly applied) adhesive.