This is a soft jaw for the Harbor Freight Doyle 4 1/2" vise. With the print setting used below it is a fairly dense rubber, lowering the infill to 50%-60% would probably make for a softer jaw that would hold delicate parts more easily, but I was mostly trying to avoid marring a surface finish.
The lips on this model grip the vise very well and it is not going to come off on accident.
I printed in Overture Black TPU on Bambu P1S fully enclosed with “Generic TPU” as the filament settings.
7 wall loops
5 Top and Bottom Shell Layers
90% Cubic infill
Vise:
https://www.harborfreight.com/4-12-in-swivel-vise-with-anvil-and-pipe-jaws-57737.html
The author marked this model as their own original creation.