Drilling a hole in a magnet?

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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?

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Reply:That works.. but is that magnet chipping? It will be challenging to do if it is already chipping Sent from my SM-G960U using TapatalkI haven't built anything I can't throw away.  Perfection is the journey.    Mac
Reply: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.MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110

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Reply:Looks like a ceramic (ferrite)magnet.  You could try grinding a hole with a Dremel tool , die grinder, Du-more grinder etc. with a smallmounted stone.Miller a/c-d/c Thunderbolt XLMillermatic 180 Purox O/ASmith Littletorch O/AHobart Champion Elite
Reply:https://www.amazon.com/s?k=magnet+wi...ss_ts-a-p_5_11Syncrowave 250 w/ coolrunnerMM210 W/spoolgunSP 135Victor O/ARamsond cut 50Titanium Stick 225.
Reply: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
Reply:You need a mag drill


Reply: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.
Reply:I'd try an abrasive diamond grit bit.
Reply:

Originally Posted by 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
Reply:

Originally Posted by Tbones

https://www.amazon.com/s?k=magnet+wi...ss_ts-a-p_5_11
Reply:I had to give up. A drill bit won't even make a pockmark in the surface. Moving on to find another solution.
Reply:

Originally Posted by JD1

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.
Reply:Try using the same type of bit used for drilling ceramic tile.
Reply: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.
Reply:I have drilled through speaker magnets on multiple occasions.  To mount diamonds for dressing the grinder store.  Very slow speeds and patience.Sent from my SM-G960U using TapatalkI haven't built anything I can't throw away.  Perfection is the journey.    Mac
Reply:That kind of magnet is not very hard at all.
Reply: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


Reply:

Originally Posted by 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.
Reply:Check out K&J magnet. They have them in all shapes and sizes. Neodymium mags. are amazing.
Reply: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...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:Q. What do you get when you heat a rare earth magnet?A. Rare earth.


Reply:I would go with a wet diamond bit. https://www.amazon.com/Diamond-Drill...6787867&sr=8-7Sincerely, William McCormickIf I wasn't so.....crazy, I wouldn't try to act normal, and you would be afraid.
Reply:These look better. https://www.amazon.com/uxcell-Diamon...WT5PZJ0KS&th=1Sincerely, William McCormickIf I wasn't so.....crazy, I wouldn't try to act normal, and you would be afraid.
Reply: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.Here's a thread about drilling in glass.  Note the recommendations about using brass or copper tubing/rod and abrasive paste.http://chaski.org/homemachinist/viewtopic.php?t=11463"USMCPOP" First-born son: KIA  Iraq 1/26/05Syncrowave 250 w/ Coolmate 3Dialarc 250, Idealarc 250SP-175 +Firepower TIG 160S (gave the TA 161 STL to the son)Lincwelder AC180C (1952)Victor & Smith O/A torchesMiller spot welder
Reply:

Originally Posted by Oldendum

Here's a thread about drilling in glass.  Note the recommendations about using brass or copper tubing/rod and abrasive paste.http://chaski.org/homemachinist/viewtopic.php?t=11463
Reply:I would just epoxy in place. I had to drill hole in magnet. It depends on what they made from if can be drilled. Dave

Originally Posted by 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?
Reply:If i remember correctly magnets are considered un machinable and any dust that is produced is explosive.Lincolin Power Wave 450, Lincoln Powermig 255, Lincoln Pro Mig 140, Lincoln Squarewave Tig 275, Miller Big 40 G(with Hobart Hefty suitcase), Thermal Arc 95S and Esab PCM875 in an already full machine shop.
Reply:

Originally Posted by whtbaron

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...
Reply:

Originally Posted by JD1

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.