These are modular drawers inspired by Dan O'Connell's Modular Drawers 2.0.
They print in vase mode (a drawer prints about 80 minutes, and the shell about 120).
The shells can be interlocked on any side either flush or offset (3/4, 1/2, or 1/4 way apart).
Some people had issues with the shell printing into two separate parts. This seems to happen when the width of the extruded material is smaller than half the thickness of the model wall. Possible solutions are higher flow rates or scaling down the entire model 5% or so. The general idea is to make the inner and outer lines just barely overlap.
I did print the shells with a small brim but it'd probably be fine without one.
The few first layers distorted a bit from the heat but a bit of sanding and filing clears it up. A single shell may feel flimsy on its own but the structure is rigid when the shells interlock.