PCB thickness incorrect

The PCB thickness incorrect is incorrect in the file [/3D/BIGTREETECH S2DW V1.0.step](<../blob/master/3D/BIGTREETECH S2DW V1.0.step>)

Incorrect: 0.345mm (as seen in Fusion360)
Correct: 1.55mm (according to calipers)
This was measured from gold to gold layers where mounting screws would go.

Open 3D/BIGTREETECH S2DW V1.0.step in a CAD tool such as Fusion 360 and inspect the thickness between the gold layers at the mounting-screw area. The work is done when the model reports 1.55 mm there instead of 0.345 mm and the corrected STEP file is saved.

Written by the indexing model from the issue text.