Modular Mesh Detect Case

IntroThis is a modular, three-or-four-piece case for Colonel Panic's Mesh Detect. There's a solid two-piece case available on another site, but I had different goals:Create a modular, space-efficient design that allows for swapping base plates to accommodate different batteries.Be able to access the Heltec buttons without requiring a tool.Avoid removable pieces/doors.Utilize shorter screws than M3x25 (I have so many M3x16s and M3x20s sittings around).InstructionsStep 1: The FrameThe heart of this case is the frame, which is a rigid chassis that contains the Mesh Detect board and antennas. Start by printing the frame (no supports required) and then installing the Mesh Detect board followed by the antennas. See the image below for the intended layout.Note that the frame comes in two flavors: standard and loose. The standard variant should be fine in most cases, but the "loose" variant should be used if your printer or material requires more relaxed tolerances.Step 2: The