How to create a Electromagnet / Magnetic Drill Press vise from a Microwave Oven Transformer

How to make a magnetic drill press vise from an electromagnet.

Relevant Formulas:
The safe current of your magnetic vise is equivalent to the current of your microwave.

The magnetic force between a steel plate and a field is approximated by:
F(x,y,z) = Gradient(1/2X V B^2). Where X is a scalar, V is the volume (scalar), and B is the magnetic field vector and x,y,z is the force at that position. Where Gradient is (partial derivative x, y,z).

For practical purposes, the only thing that is relevant to know is Force is proportional to the magnetic field squared, and the volume of the work being clamped. Magnetic field is proportional to number of turns and area of coil and current.

Видео How to create a Electromagnet / Magnetic Drill Press vise from a Microwave Oven Transformer канала Nick's Garage