I have been 3D printing with a slightly flexible plastic when it occurred to make a set of soft jaws for holding 40mm cases in a vise.  Right after I spent most of the day printing a set, I thought up several improvements.  These are V2.

The rings in the cutouts are for holding cases by the rim, so the case can be held mouth out.  The jaws are held to the vise via small magnets glued into pockets on the backside.

For some reason I can't seem to post pics to this forum but here are links to pics of the soft jaws.

Soft Jaws 1

Soft Jaws 2

Soft Jaws 3

Soft Jaws 4

Soft Jaws 5

Soft Jaws 6

I need to get a 3d printer.

And start printing stuff.

That soft vice would be great to help punch out the old blanks to help reload. Great job.

Any chance you could share the .stl file?