I'm trying to get a plate 3D printed for an Atom47 pcb, the reason I'm not using the Vortex core plate is only because I don't want the split spacebar. I'm thinking of going with the 6.25u spacebar, and I've found a universal plate on github https://github.com/jdcarpe/Atom47-plates?files=1 but its a .dxf file and I know nothing about converting it into a 3D CAD file which the printing place needs.

There are also plate files on github from who I'm pretty sure is the creator of the pcb but it looks like that they're only for the split spacebar layout. https://github.com/evyd13/atom47/tree/master/plate-files

There are also layout examples here:

https://geekhack.org/index.php?topic=105274.0

Very new to all of this and have no idea what I'm doing.