Magnetic, or mag, drills are used as mobile drill presses to drill holes in thick steel plate. The electromagnet located at the bottom of the mag drill holds the drill motor in place while you drill a hole through a steel plate. The strength of the electromagnet determines the size of the hole that the drill is capable of drilling. Although a mag drill will hold readily to carbon steels, you must use special techniques to secure a mag drill when drilling into stainless steel or aluminum, which are non-magnetic.
Instructions
Things You'll Need:
* 1/2-inch steel plate
* Two pair of self-locking pliers
* Mag drill
* Clean rag
1) Lay the 1/2-inch steel plate on top of the non-magnetic metal. Position the metal so you have a clear path for the drill bit to drill into the non-magnetic material.
2) Secure the 1/2-inch steel plate to the non-magnetic material by placing a pair of self-locking pliers on two opposing corners of the steel plate, making sure to catch both materials in the jaws of each pair of self-locking pliers.
3) Turn the mag drill on its side and wipe the bottom of the electro-magnet with a clean rag. Metal shavings lodged between the electro-magnet and the surface of the metal will lessen the holding strength of the mag drill.
4) Set the mag drill on the 1/2-inch steel plate and align the drill bit with the area on the non-magnetic material you need to drill the hole.
5) Turn on the electro-magnet to secure the mag drill to the 1/2-inch steel plate.
6) Apply pressure on the handles of the drill motor. The mag drill should not move under pressure. If the mag drill moves, turn off the mag drill and the electromagnet and repeat step three to ensure that the base of the electro-magnet is clean and repeat steps four and five to ensure that the mag drill is secure.
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