I will be teaching a cold casting brass (and other metals) class this Sunday, I will have a few molds available for attendees to cast a brass part, without using and heat or melting, very safe and fun class. I will have Brass, copper and nickle silver available for casting, if you have a small silicon mold and would like to cast in it, feel free to bring it along.
https://calendar.dallasmakerspace.org/events/view/9073