Diamonds need to set in RPT and than cast

General Discussion
1

hi
wants to know can we do diamonds set in PRT and than do casting?

2

No,because the resin needs to high Temperatur to burn out.

3

I think the R&R Plasticast recommended burnout is a top temp of 720 degrees centigrade. Diamonds should stand that?

4

There are plenty of gemstone firing guides for people who embed gems in precious metal clays. Here’s one: https://www.cooltools.us/v/vspfiles/assets/images/Article-Gemstones_In_Metal_Clay.pdf

Diamonds are generally designated do not fire because they can fracture at kiln temperatures.

5

Which is ironic because they are originally formed at 900 - 1,300°C (1,652 - 2372°F). :wink:

(I know, I know: it’s the pressure that stops it cracking).

6

Google “stone in place casting” - there’s a fair number of resources on the subject.