To control the mass of power coming from his huge cap, [Robert] used a 13o amp Silicon controlled rectifier to improve the control of his welder. With the battery charger, cap, and SCR ...

That need is what led [Erwin Ried] to purchase a small, battery-powered spot welder from a maker in Korea and test it out on nickel strips. The spot welder [Erwin] used is the work of a user by ...

The Hobart Trek 180 is a portable MIG welding that operates off its self-contained battery or 115V power and welds 24-gauge up to 1/4-in. mild steel in a single pass and recharges off an ...

Watch this easy step-by-step guide on how to create a simple yet powerful spot welder using just a battery. With minimal materials and some basic tools, you'll be able to make this handy machine ...