Question: How do you solder two coins together?
Option 0: Place coins where you would like them to be joined and apply glue to both sides in order to make them adhere to each other.  Cool down quickly with a water bottle.
Option 1: Place coins where you would like them to be joined and apply heat to both sides in order to make them adhere to each other.  Cool down quickly with a water bottle.
Answer: 1