Don't know if it will be what you are looking for,but the gas welding
rod is bronze. and it does melt and ball/blob up into little
flattened balls when it hits a surface. You can get it in a number of
alloys and dia. from 1/16" up to 5/16" being the most common sizes
stocked in a good welding supply. The stuff is mostly a type of naval
bronze alloy,reading the imprint on the stuff I have in the shop.
been there, haven't tried that yet!