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.

[tackit]

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.

[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