Termite pencil - manufacture
|Termite pencil - manufacture|
A regular match suggested the construction of a thermite pencil.
With its help, it is quite possible to weld simple country metal products at the dacha section.
A pencil is a piece of wire made of ordinary carbon steel. Its diameter - from 2 to 3 mm - depends on the thickness of the parts to be welded. The thicker, the bigger the diameter. Outside, a thermite mixture is applied to the wire, steeply mixed with glue. Its composition: 24% (by volume) of sawdust of aluminum, (but not of sulumin alloy), and 76% of iron scale. The particle size is up to 0.5 mm.
At the end of the termite pencil is a seed, very similar to a match head. It consists of 1 part (by weight) of bertolet salt and 0.5 part of fine aluminum sawdust. Both components are also kneaded with glue. It is understood that the seed is needed to initiate a combustion reaction. That's the whole trick.
But remember that when welding, be sure to use a holder and glasses with dark glasses.