In practice, that often means a soldering iron instead of a sewing machine.
A soldering iron and supplies are often necessary to build high-performance battery packs or install upgraded electronics with low-resistance connectors.
A voltmeter or ammeter is attached to the sample, and a heat source, such as a soldering iron, is placed on one of the leads.
A cold soldering iron requires time to reach working temperature and must be kept hot between solder joints.
This is usually the result of the soldering iron being used to heat the solder directly, rather than the parts themselves.
A soldering iron is composed of a heated metal tip and an insulated handle.
The soldering iron tip must be clean and pre-tinned with solder to ensure rapid heat transfer.
Special soldering iron and magnifying glass not required!
