Drilling a hole in a magnet?

[JD1]

Before I ruin this by experimenting I wondered if anyone here has drilled a hole in a magnet successfully. I need to put a 5/16" hole in this one and thought about starting with a small bit and incrementing my way up?

[Mac's Crew]

That works.. but is that magnet chipping? It will be challenging to do if it is already chipping

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[duaneb55]

Never tried it myself but starting small and working up was my first thought as well. Sharp drills and go SLOW would be my suggestion.

[jpump5]

Looks like a ceramic (ferrite)magnet.
You could try grinding a hole with a Dremel
tool , die grinder, Du-more grinder etc. with a small
mounted stone.

[Tbones]

https://www.amazon.com/s?k=magnet+wi...ss_ts-a-p_5_11

[123weld]

i had the same scenario u goin through i think. i had magnets come out of a $53 stabila torpedo . i tired to drill, but couldnt. ive seen torpedo magnets w/ holes through them though

[Woznme]

You need a mag drill

[JD1]

Home Depot has some Neodymium magnets with the right size hole in them but they're too strong for what I need. Guess I'll just start with my smallest bit and work up.

[12345678910]

I'd try an abrasive diamond grit bit.

[Brett]

i had the same scenario u goin through i think. i had magnets come out of a $53 stabila torpedo . i tired to drill, but couldnt. ive seen torpedo magnets w/ holes through them though

Some magnets are Cobalt , now that would take some drilling .
Some however are iron .

[JD1]

https://www.amazon.com/s?k=magnet+wi...ss_ts-a-p_5_11

There's some of those over at Home Depot with the right size hole in them. But they're too strong for what I need it for. Guess I'll just start with my smallest bit and gradually go up. Don't know what it's made of, just some cheap magnet so maybe iron.

[JD1]

I had to give up. A drill bit won't even make a pockmark in the surface. Moving on to find another solution.

[chewinggum]

There's some of those over at Home Depot with the right size hole in them. But they're too strong for what I need it for. Guess I'll just start with my smallest bit and gradually go up. Don't know what it's made of, just some cheap magnet so maybe iron.

When a magnet is too strong, I often coat it with a layer or two of duct tape.
CG

[Denis G]

Try using the same type of bit used for drilling ceramic tile.

[Reebz]

Try https://www.kjmagnetics.com/
KJ has rare earth mag. many with holes.
Magnets hate heat once you hit the curie point they lose mag.

[Mac's Crew]

I have drilled through speaker magnets on multiple occasions. To mount diamonds for dressing the grinder store. Very slow speeds and patience.

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[danielplace]

That kind of magnet is not very hard at all.

[ronsii]

A lot of the jewelry crowd uses micro core bits and other assorted diamond covered tooling. you could also rig up a redneck EM setup and bore through with electrical

[shortfuse]

If that was a solid magnet, I would have tried to spot heat it in the center with a torch, and then drive a small center punch through it.

As Reebz said, if you heat a magnet past the Curie point (temp), you will no longer have a magnet.

[Reebz]

Check out K&J magnet. They have them in all shapes and sizes. Neodymium mags. are amazing.

[whtbaron]

Thinking about those ones that were available with the hole, but too strong. How about a variation on the duct tape idea, and coat them with fiberglass resin? Can't you weaken a magnet by dropping it? Not sure how many million drops that would take if you wanted it to happen though...

[Woznme]

Q. What do you get when you heat a rare earth magnet?

A. Rare earth.

[William McCormick]

I would go with a wet diamond bit.


https://www.amazon.com/Diamond-Drill...6787867&sr=8-7


Sincerely,

William McCormick

[William McCormick]

These look better.

https://www.amazon.com/uxcell-Diamon...WT5PZJ0KS&th=1

Sincerely,

William McCormick

[Barclay]

To drill a hole in a magnet, you will need to apply the tip of a power drill onto the surface of the magnet and gently push it down into the center. For the best results, you should proceed with frequent stops to flush the holes with a coolant solution to prevent adverse effects.