Safety requirements: Wear protective eye wear while working with metal.
Why? Keeps small pieces of cut metal from your eyes if it snaps.
Equipment safety: Keep your hands away from the blades. Cut only metal that you do not have to "power" through. Powering through means pushing the equipment beyond its point and may cause injuries.
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Using Guillotine Shear
This shear is used to cut larger sheets of metal down to workable sizes, cutting rounded corners, and cutting flush edges.