I have a bunch of Tiles that have failing batteries in them, so I ordered a bunch of replacements from Digi-Key. The rather scammy nature of the Tile’s construction (Soldered battery, and ultrasonically welded, tough as a Tick case) means you have to destroy the case to replace the battery.
I was going to 3D print one, but have this laser sitting behind me, and some proof grade…
Proofgrade Maple veneer, a top a bottom, and a “Shim” layer. also two shims that fit inside the compartment to hold the board.
The core is Proofgrade Acrylic. Too bad we don’t have proof grade Delrin yet!