This is a 3D printed cover to go on the front of the SPA-1 base unit of the FTX-1 if you are mounting the FTX-1 field unit remotely. The fit is not quite exact, but it does “click” into place with the latch on the SPA-1.
A .3MF file as well as a FreeCad .FCStd file are provided below. These are completely open source to use or modify as you wish. I will post updates here as I make any tweaks to the files.
.3MF 3D Print File:
FreeCAD .FCStd File: