Salvaged Drill Gets A Magnetic Upgrade

For most people, a broken tool is at the end of its useful life. But rather than toss a heavy-duty drill that had its handle broken off, [Workshop From Scratch] thought it was a perfect opportunity to create something new. In his latest video, he shows how he converted this old hand tool into a magnetic drill press with predictably impressive results.

Despite being assembled largely from pieces of scrap metal cut into shape with an angle grinder, we wouldn’t blame you for believing the end result was a commercial product. From the handles salvaged from chewed up old screwdrivers to the scratch-built rack and pinion assembly, the attention to detail here is really fantastic.

Removing what was left of the broken handle.

It’s difficult to pick a favorite detail, but the reinvented enclosure for the drill certainly ranks up there. [Workshop From Scratch] could have simply bolted on the tool as-is, but instead he surgically removed the vestigial handle to make it look as though the drill was always meant for this application. After cutting, it was finished off with some body filler, a bit of sanding, and a coat of his signature orange spray paint.

When he built his magnetic vise, [Workshop From Scratch] used magnets pulled from automotive air conditioning systems. They got the job done, but were somewhat annoying to work with given their round shape. This time around, he’s used off-the-shelf magnetic locks intended for steel doors. When energized with a 19 V laptop power supply, he says the three rectangular electromagnets have a combined pull of 540 kilograms.

If you don’t have a broken drill to use as a donor for this type of project, don’t worry. You could always use a salvaged hoverboard motor instead.

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Hoverboard Grows Up, Becomes Magnetic Drill Press

If you need to drill metal in tight places, the magnetic drill press, or mag drill is your BFF. The idea here is that a drill press with an electromagnetic base can go anywhere, and even drill horizontally if need be. If you don’t need to use one often, but want one anyway, why not build one out of e-waste?

[DIY KING 00] built this mag drill starting with the motor from a hoverboard. While these three-phase brushless motors have a lot of torque to offer reuse projects like this, they’re not designed to be particularly fast.

He was able to make it about three times faster by cutting the windings apart and reconnecting them in parallel instead of series. He designed a simple PCB to neatly tie all the connections back together and added an electronic speed control (ESC) from an R/C car.

Reluctant to give up the crown, he made his own three-coil electromagnetic base, using a drill to wind magnet wire around temporary chuck-able cores. The coils are then potted in epoxy to keep out dust and drilling debris. Everything runs from two large LiPo batteries, and he can get about 15 minutes of high-torque drilling done before they’re dead. Can you feel the electromagnet pulling you past the break to check out the build and demo video?

Depending on what you’re doing, you might get away with a magnetic vise instead.

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