I designed these vise jaws to fit the Dytex LM 204 vise that I have, although they will probably fit Panavise 346 as well (may need to be a bit taller, step file included).
I found the neoprene ones left a black mark on items clamped in the vice. I printed these in black TPU 95 shore hardness and they work well, without marking the work item.
The author marked this model as their own original creation.