Stop in for a cup of coffee

Melting point of like 1700°F.

Need a forge furnace. If the plaques are large then that's a challenge

10KG Gas Metal Melting Furnace Propane Gold Silver Copper Smelter Casting Tool | eBay
I was looking at those. They average 2" x 1.5" some bigger some smaller. That would take forever to do. And I am not doing it!