I have been making pendants for a while now, firstly in steel then in copper and now in bronze. I thought (hoped) I could cold forge the bronze like copper but it work hardens very quickly and then splits under the hammer, so alas I had to fire the forge up but only a little heat.
Its an odd material to work with as you have to forge it hot but if you get it to cherry red or hotter it just turns into mush with out warning. When its hot its very soft but then in two seconds its rock hard again, steel and copper on the other hand tend to harden slowly as they cool.
I had a play and made these today for pendants or key chains.