best place to buy strong rare earth magnets

[+gonzogunner]

I have a cache that I need 3 1/2 inch diameter strong rear earth magnets for. the cache is built and almost ready to set out, but I need those magnets to finish it off.

[+gonzogunner]

thinking about these right here. the 11 pound pull force is looking pretty good to me. http://www.apexmagnets.com/1-2-x-1-4-x-1-2-rings-tubes

[RuideAlmeida]

Have you considered the magnets inside the broken hard drives? They are really strong...

[+Gitchee-Gummee]

thinking about these right here. the 11 pound pull force is looking pretty good to me. http://www.apexmagnets.com/1-2-x-1-4-x-1-2-rings-tubes

These are more than what you need.

Assuming that you want to create a magnetic micro, you have no use for 11 lbs holding force.

 

Most any craft store has what you need... Michael's (are they closed?), Hobby Lobby, even I think JoAnn Fabric stores carry them.

Generally in two (thin) sizes, about 1/4" and 1/2" in diameter. The smaller ones do fine epoxied either inside (my preference) or outside bottom.

I like inside because if the epoxy should fail, the magnet is still inside and doing its job!

You can find many logs where folks found only a magnet... but never for one that has it inside the container.

Epoxy eventually fails, especially when exposed to weather and sunlight.

[+gonzogunner]

thinking about these right here. the 11 pound pull force is looking pretty good to me. http://www.apexmagnets.com/1-2-x-1-4-x-1-2-rings-tubes

These are more than what you need.

Assuming that you want to create a magnetic micro, you have no use for 11 lbs holding force.

 

Most any craft store has what you need... Michael's (are they closed?), Hobby Lobby, even I think JoAnn Fabric stores carry them.

Generally in two (thin) sizes, about 1/4" and 1/2" in diameter. The smaller ones do fine epoxied either inside (my preference) or outside bottom.

I like inside because if the epoxy should fail, the magnet is still inside and doing its job!

You can find many logs where folks found only a magnet... but never for one that has it inside the container.

Epoxy eventually fails, especially when exposed to weather and sunlight.

 

no. these will be inside a cache behind a 1/2 inch off wood.

[+Chrysalides]

I have a cache that I need 3 1/2 inch diameter strong rear earth magnets for. the cache is built and almost ready to set out, but I need those magnets to finish it off.

 

I've purchased from http://magnet4less.com in the past. Another online store is http://www.kjmagnetics.com/ - however, unless you're buying in bulk, it may be easier just to get some from eBay.

 

At first I thought you wanted a 3.5 inch diameter rare earth magnet. That would probably be a 5 star difficulty cache

 

I'm not sure how you want to use it, but 1/2" diameter, 1/8" to 3/16" should be about right for your needs. Something like this :

 

http://www.magnet4less.com/product_info.php?cPath=1_11&products_id=550 - 1/2" x 3/16" with a pull force of 10.5 lb. 43 cents each, but shipping in small quantities is probably going to be ridiculous.

 

Have you considered the magnets inside the broken hard drives? They are really strong...

 

I find it extremely difficult removing the magnet from the mu-metal backing. I can pop it off if I use a couple of wrenches for leverage to bend the mu-metal, but most of the time the plating that protects the magnets is damaged when I do that. Probably best to just leave it on the backing if you can use it that way.

Edited September 28, 2014 by Chrysalides

[+NYPaddleCacher]

thinking about these right here. the 11 pound pull force is looking pretty good to me. http://www.apexmagne...1-2-rings-tubes

These are more than what you need.

Assuming that you want to create a magnetic micro, you have no use for 11 lbs holding force.

 

Most any craft store has what you need... Michael's (are they closed?), Hobby Lobby, even I think JoAnn Fabric stores carry them.

Generally in two (thin) sizes, about 1/4" and 1/2" in diameter. The smaller ones do fine epoxied either inside (my preference) or outside bottom.

I like inside because if the epoxy should fail, the magnet is still inside and doing its job!

You can find many logs where folks found only a magnet... but never for one that has it inside the container.

Epoxy eventually fails, especially when exposed to weather and sunlight.

 

no. these will be inside a cache behind a 1/2 inch off wood.

 

A wood chisel could reduce that to 1/8" pretty quickly.

 

 

[+gonzogunner]

thinking about these right here. the 11 pound pull force is looking pretty good to me. http://www.apexmagne...1-2-rings-tubes

These are more than what you need.

Assuming that you want to create a magnetic micro, you have no use for 11 lbs holding force.

 

Most any craft store has what you need... Michael's (are they closed?), Hobby Lobby, even I think JoAnn Fabric stores carry them.

Generally in two (thin) sizes, about 1/4" and 1/2" in diameter. The smaller ones do fine epoxied either inside (my preference) or outside bottom.

I like inside because if the epoxy should fail, the magnet is still inside and doing its job!

You can find many logs where folks found only a magnet... but never for one that has it inside the container.

Epoxy eventually fails, especially when exposed to weather and sunlight.

 

no. these will be inside a cache behind a 1/2 inch off wood.

 

A wood chisel could reduce that to 1/8" pretty quickly.

I can drill it to the depth I want. just want a magnet strong enough to do what I have in mind.

[+WarNinjas]

Ive started to get these on Ebay. They have a counter sunk hole in them and then you can screw them on and not worry about glue failing. Have worked perfectly. Just make sure to get ones big enough that you can find a screw to fit. The first ones I ordered were to small but the second bigger ones have worked like a charm. Then you could sink the magnets in the wood and add a screw and you should be set for whatever you are wanting it to hold.

 

[+SwineFlew]

Woodcraft got them

 

http://www.woodcraft.com/search2/search.aspx?query=rare%20earth%20magnet

[+T.D.M.22]

Try Lee Valley They have rare earth magnets of all sorts-hole in them, solid, big, tiny, and other styles I've never seen before. They also have these Bison Tube type things that are great. And those tiny pet ID tubes. And RITR notebooks. Actually they have a lot of stuff for geocaching....