I want to try printing the mouse in a resin printer using a softer resin (TPU?). Is there an .STL of the shell without the support?
If you are referencing the official Bambu Lab Wireless Mouse hardware kit, you can go to the models page on Makerworld and click “Raw Model Files”.
All of the models .3mf or .stl have the support in place.
You can open the shell with support in bambu studio, rotate it 90 degrees and perform a cut right at the flat bottom of the shell keeping the shell only and export it as stl to use in your resin slicer. You will still have some supports inside the shell but limited and easy to remove after resin printing.