One of my prettiest prints to date. Slic3r Hilbert curve infill 30% with no top or bottom. Unfortunately functionally worthless since it’s too flimsy.
What if you try it with the hex infill? Might look cool and still be rigid enough.
Well, for this piece there’s really no reason not to have a top and bottom, so that’s what I’m doing now. Not as pretty of course…
It’s a jig for holding a watch movement holder on an xy positioning table.
Set in clear thin layer of resin it would make a lovely pendant 
Seems like Hilbert infill would be the mathematically weakest structural infill possible, pretty though 