Figured y'all would like this one too.
At work we're making a method to create a complex shape agarose based gelatin "brain" inside another structure but need to be able to backfill space around it with a 3rd material.
Normally you'd use dissolvable filament, but since the agarose is water based that's not feasible. So we're exploring casting into ABS then dissolving in acetone (which other things are robust to)
Behold - the classic "sphere in a smaller cube" model that would be impossible to manufacture via normal assembly but this time the sphere is made of agarose gel and the cube is Nylon...
Proof of principle achieved
[ATTACH=full]423122[/ATTACH]
In other news we were quite surprised to learn Ultimaker brand ABS doesn't dissolve in acetone. Turns out it has polycarbonate in it, despite not being advertised as pc-abs.