An Adapter for your vise/clamp to hold onto parts wich should not be pressed together by hard metal 

→ print the Holder out of any hard material like pla, petg or …

→ print the insert out of tpu 

• print 2 of each (Holder and Insert)
• use 6x 6mmx3mm magnets (reverse polarity on the other side to let them snap together for storage)
• Magnets: https://amzn.eu/d/88l2noK (others same size or smaller are fine too | or edit step file for your needs)
• Glue the magnets
• break away the little built in support (marked on the picture)
• slide the tpu insert in the holder

if not the chase: orient the 3D model standing with the tip of the drop pointing to the ceiling (see picture 3)

Use the print profile or:

Adjust infill an top layer count based on your need of softness