Don't wanna hijack this thread, however it would probably be of interest to many if we started a new thread on the subject!

I've often thought about that, or even carving or shaping a part, then creating a mold. I suppose guys creating with resin do it all the time...

Years ago, (40 years), on a much larger (sculpture) scale, used clay, plaster and paraffin... I had also secured some medical (dental) grade 'quick setting' mold material.

Have you any good reference 'how-to' material on the subject for modelers?