• We invite you to join UKWorkshop.
    Members can turn off viewing Ads!

Hard Drive Magnets

UKworkshop.co.uk

Help Support UKworkshop.co.uk:

brianhabby

Established Member
Joined
24 Sep 2006
Messages
1,964
Reaction score
3
Location
Colwyn Bay, North Wales
Browsing YouTube the other day I stumbled across a guy who was stripping old hard drives to get at the various components, including some neodymium (rare earth) magnets. I've had some old drives knocking about for ages waiting to decide how best to dispose of them so now I've got a pile of useful magnets for free.

Anyone else tried this?

regards

Brian
 

CHJ

Established Member
Joined
31 Dec 2004
Messages
20,130
Reaction score
74
Location
Cotswolds UK
Yes they are distributed around my machines and hold Allen keys, chuck keys, spanners etc. regularly needed on that machine.

Even buried them in wood projects to close lids, hold cheese knives etc.
 

Tom K

Established Member
Joined
19 Aug 2007
Messages
1,277
Reaction score
9
Location
NW Kent
Yeah I have my grass shears and a machete held to the shed wall for years this way. (hammer)
 

Noel

Moderator
Staff member
Moderator
Joined
7 Aug 2003
Messages
6,785
Reaction score
319
Very handy items. Have them buried on feather boards on most machines.
 

Tom K

Established Member
Joined
19 Aug 2007
Messages
1,277
Reaction score
9
Location
NW Kent
You don't need a machete on every machine Noel one by the door is plenty for almost any eventuality. (homer)
 

Pete Maddex

Established Member
Joined
22 Apr 2005
Messages
9,172
Reaction score
125
Location
Nottingham
Hi, Chaps

Yep, got loads my self.

We used to leave them near peoples CRT monitors just for fun!!!

Pete
 

chippy1970

Established Member
Joined
3 Jun 2007
Messages
3,027
Reaction score
0
Location
London
Yeah I've removed them from hard drives before, I made the mistake of holding two in my hand once :D they slam together and give you a nasty pinch if you're not careful

Sent from my HTC Desire S using Tapatalk 2
 

Eric The Viking

Established Member
Joined
19 Jan 2010
Messages
6,599
Reaction score
59
Location
Bristle, CUBA (the County that Used to Be Avon)
If you ever see a 5.25" drive, especially an HP one (they're ancient - HP got out of the business in the late 1990s), those magnets are huge and very, very strong. I keep mine on the office radiator, always separated from it by a business card. I had a friend who worked for HP's disk division who cut himself quite nastily on a finger when it got in the way of two of those magnets coming together.

I use mine for welding, and for cleaning up swarf from the bench and floor: you can get small but quite thick polythene bags for the freezer, and the ones hardware comes in are sometimes OK. Put magnet in bag. Pick up swarf on outside. Turn bag inside out, carefully, and throw away. It needs to be thick as grinder swarf is like needles and will go straight through a thin bag.

You can sometimes separate them from the soft iron part with a mallet and a hardwood wedge. It's worth it, because you get two parallel flat poles, and you can stick right-angled triangles to them, which is ideal for alignment when you're welding.

If anyone has an old magneto-optical drive knocking about (the ones taking a CD-sized disc in a shuttered cartridge) they have incredibly powerful, very small magnets in them, in the head assembly. The disc surface was heated by a laser, then the magnet changed the optical polarity. It had to do this very fast, hence enormous strength. I'm not sure what they're made from though. They're cigar shaped and about 5/8" long, and the poles are weirdly on the sides of the things.

Tape drive motors also have very powerful magnets in them, too.
 

Noel

Moderator
Staff member
Moderator
Joined
7 Aug 2003
Messages
6,785
Reaction score
319
Tom K":2rme53nn said:
You don't need a machete on every machine Noel one by the door is plenty for almost any eventuality. (homer)
LOL.
 
Top