Yuktsi posted open source version of the acrylic case files in the Alice GB thread. Zambumon modifies them keeping it 4 parts, each 5mm thick. I modified them into a two part construction with integrated plate on the top half. Mine can’t be laser cut like Yuktsi’s or even CNC’d if you use acrylic. I’ve been spending months and a lot of money finding a manufacturer that can satisfactorily even make a one off for me, so Yuktsi’s files or Zambumon are the way to go for now.
Keep in mind, from what I saw on MrKeeb’s stream with the 5mm acrylic plate layer, you can’t use screw in stabilizers. You need PCB mount, flush stabs. Or if you go into CAD and extrude that layer, you can add cutouts like the Zephyr plate has.