If you have properly modeled footprints (1:1 scale, XY plane of the 3D
model on the PCB and origin at the center of the bounding box), then you
can easily generate a 3D view of the assembly. In this screenshot, you can
see the generated model being rendered by view3dscene.

*Code:*

https://gitlab.com/atamariya/emacs/-/blob/dev/lisp/svg.el
https://gitlab.com/atamariya/emacs/-/blob/dev/lisp/gerber.el

*Details:*
https://lifeofpenguin.blogspot.com/2021/11/pcb-design-in-gnu-emacs.html