You will need low heat to get the reaction going.
Brown fumes will appear. YOU MUST NOT BREATH THESE!
Place the silver-containing object into the acid and wait until it dissolves.
Let the acid cool down.
Place a copper bar into the acid. Don't use wire or sheet as pieces will
break off and fall to the bottom of the container.
You will see a carpet of Silver forming on the copper bar.
Give the bar a shake every now and then. It wll fall to the bottom.
Leave it for 24 hours.
The spongy carpet left at the bottom is your silver.
Pour off the acid carefully and wash your silver thoroughly
in distilled water. You will have 99% pure Silver.
Melt and enjoy!