Rosin
Videos
Rosin, also known as colophony or Greek pitch, is a resinous material obtained from pine trees and other plants, mostly conifers. The primary components of rosin are diterpenoids, i.e., C20 carboxylic
A piece of rosin at Mimizan Heritage House, France
Pharmaceutical rosin
An etching plate covered with powder resin
A cake of rosin, made for use by violinists to rub on the violin bow
Soldering
Videos
Soldering joins two metal surfaces using a filler metal called solder. The surfaces are heated, melting the solder, which is then allowed to cool and solidify, creating a strong and durable joint.
Using a soldering iron to desolder a contact from a wire
Small figurine being created by soldering
A silversmith hard soldering of silver rings using flux and silver solder wire.
Soldered copper pipes