How to Build a Spot Welder

As a spot welder this combination unit will join ferrous metals up to 3/32 in. thick.

It works especially well on stainless steel due to low heat and electrical conductivity of this metal. For heavier work it is used as an arc welder.

A carbon-arc torch may be plugged in and used for brazing, silver soldering, aluminum welding and welding thin sheet metal as well as heating metals for bending.

The voltage booster can be used to eliminate power-robbing voltage drop when portable electric tools and equipment must be used on a long extension cord. The voltage booster requires no extra coils, only a switch and receptacle connected into the circuit.

Build a Spot Welder Plans


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