I'm printing with 2 walls, 3 top and bottom, 5% adaptive cubic infil on bambu printers.  With bolts and low speed plastic this took a little over 5 hours at just under 200 grams of filament.

This is the 2nd iteration, the first had too much flex in the clamp, so I added vents and champers to increase the strength. 

So I was saw a clamp and thought, hey wouldn't it be cool if I could clamp little cubby cubes <hexes> on my shelves?
This interlocks with my previous https://www.printables.com/model/496730-basic-modular-interlocking-hex-shelf that used the hex shelf from.

Timelapse of print https://youtu.be/nL3dH1rWuUQ