a solder fusible at temperatures below 700°F (370°C), generally an alloy of lead and tin.
- Compare hard solder.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use soft solder in a sentence
It has been enlarged with soft solder, as though Essex had only trusted it to a jeweller working in his presence.Private Letters of Edward Gibbon (1753-1794) Volume 1 (of 2) | Edward Gibbon
The inside shell of this silver moulding is filled with soft solder, and then bent into the requisite form.A Dictionary of Arts, Manufactures and Mines | Andrew Ure
With good soft solder, nearly all kinds of soldering can be done over a lamp without the use of a "copper."
These, with others, are employed for soft solder joints, the temperature of which rarely exceeds about 600 Fah.
How to solder: soft solder is a mixture of tin and lead in even proportions.The Library of Work and Play: Working in Metals | Charles Conrad Sleffel