Another powerful homemade clamp idea

To make the fixture as powerful as possible, you need to take a large-diameter bolt with a nut as the base to which the rest of the fixture is mounted by welding.

Of the additional materials, you will need a piece of the tetrahedron, two plates of thick metal, a nut and a piece of round timber, or a bolt. It is a good idea to create a hold-down floating pad; for this, a groove is made in the main bolt into which the nut is clamped (it should hang, but keep in place). Next, a metal plate is welded to the nut.

It is convenient to use such a clamp during welding work, it is easy to clamp it in a yew thanks to the use of a tetrahedron in the design.