Hello Hans, welcome here !
Stl2dat requires text (ASCII) file format. As for unit, LDraw uses lduĀ units with 1 ldu = 0.4mm. So you either need to upscale your parts by 2.5 before exporting to STL, or use scaling in stl2dat.
Stl2dat requires text (ASCII) file format. As for unit, LDraw uses lduĀ units with 1 ldu = 0.4mm. So you either need to upscale your parts by 2.5 before exporting to STL, or use scaling in stl2dat.