If you want to be a metalsmith you’ll have to become familiar with solder, which is the substance you use to fuse two metal surfaces.

The word solder traces back to the Latin word solidare, meaning “to make solid.” That’s what you use solder for: to make something solid. In this case you are joining two metal surfaces so they appear as one solid piece. The word also has a verb form, also solder, to describe the act of joining the metal pieces. You might use solder, for example, to solder a metal piece on a computer's motherboard.

Definitions of solder

v join or fuse with solder

solder these two pipes together”
dip solder
solder by immersion in a bath of molten solder
repair with soft-solder
solder together by using hard solder with a high melting point
Type of:
conjoin, join
make contact or come together

n an alloy (usually of lead and tin) used when melted to join two metal surfaces

hard solder
solder that contains copper; melts at a relatively high temperature; used for brazing
silver solder
a solder that contains silver
soft solder
solder that melts at a relatively low temperature
Type of:
alloy, metal
a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten

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