Hi @bananabread
you are trying to achieve a mechanical representation of your pcb and components
so scale is mandatory 1:1 for all the 3D models
please spend some time reading the starter guide…
https://sourceforge.net/projects/kicadstepup/files/kicadStepUp-starter-Guide.pdf/download
there is a paragraph about “Create your own Library” which is very useful
All good library model should have
(model shapes/your3Dmodel.wrl (at (xyz 0 0 0)) (scale (xyz 1 1 1)) (rotate (xyz 0 0 0)) )
kicad StepUp tools can take care of offset and rotation, but I still would suggest you to use them only for enclosures or mechanical spaces or screws…
you can align and check if your model will fit the footprint, loading the footprint itself inside FreeCAD and align there the 3D model in MCAD way
have a look at this thread
Also have a read at this thread from the first post… you will see that someone found the same doubts and did some steps to improve the ECAD to MCAD collaboration…
also this thread may be very useful
Maurice