Do-it-yourself magnetic square

A very convenient fixture for welding square tubes. To make such a square, you need a pair of flat square plates, bolts and a magnet. The magnet can be used ferrite from the speaker, but neodymium is better to use. If you have a production line or a lot of right angles in the design, such a device will save time.

The universality of this square in the connection of the plates, magnets of different thicknesses can be used.