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.
I would be careful with resin as filler material, 2 component epoxy for example gets really hot due to the polymerization process (around 70-90°C in some cases) and could deform a PLA shell easily just because of the heat. They also suffer a lot from shrinkage, wich might be problematic too.
Maybe, as already mentioned in this thread, concrete would be a safer bet.