the cutaway opening made when sawing or otherwise cutting materials
Tip cleaner
small, round rod-like devices that remove dirt from the holes in welding and cutting torch tips
Reinforced concrete
material placed in new concrete to increase strength; steel rods and wire are placed in forms before the concrete is placed while other reinforcement material (such as fiberglass) is added as the concrete is being mixed
Decibel (dB)
a unit of sound measurement
PVC
a type of plastic pipe and fittings made of polyvinyl chloride
Ampere
a measure of the rate of flow of a current in a conductor
Fitting
a part used to connect pieces of pipe or to connect other objects to pipe
Neutral flame
an oxyacetylene flame with a balance of oxygen and acetylene
Bleeding the lines
removing gas pressure from all lines and equipment, as with oxyacetylene welding systems
Carbonizing flame
a flame with excess acetylene; adjustment is needed to achieve a neutral flame