Stackable Part Storage Bin Drawers

The snaps don't work great (use at least an 0.4 nozzle i think). A little hot glue might go a long way in securing the stack.
Or _stack the shells in your slicer_ to print a secured stack.
* Printing the shells on their back can be done with with no supports.
* The drawers print okay with no supports as well (minor smudges on the handles).
* Use "Triple Clips" for more secure mounting.
* Lip added to base for securing a stack to the shelf without pulling out.

You can scale these to make bigger or smaller bins.