Magnet questions?

[mindfad]

Hello,

Was looking to start using these, any suggestion where to buy them? Size that are go to

so far it seems like these was the cheapest I could find:

http://www.aliexpress.com/item/500pcs-Bulk-Small-Round-NdFeB-Neodymium-Disc-Magnets-Dia-3mm-x-1mm-N35-Super-Powerful-Strong/1376785308.html

thoughts or suggestions appreciated

[blackstone]

I buy off ebay. I think N52 are the have the strongest attraction but the N35 are fine.

If you're using the magnets for something like attaching different weapons to the same arm be careful of the polarity. Get it wrong and the magnets will repel each other. Often best to use a magnet on one part and something steel on the other.

[mindfad]

what do you mean by something steel in regards to a miniature ? At the moment I am working on this.

http://blog.ryan.skow.org/2015/05/zombicide-storage.html?m=1

But Have a pile of minis to put together that I want to magnetize

[audrey]

I use N42-N52. Here are 2 places I buy magnets from. Though they are not the cheapest.

http://www.magnet4less.com/ (cheaper but not as good a selection as K&J)

https://www.kjmagnetics.com/

For polarity you can buy a pole detector or use a marked magnets. There also are premarked magnets https://www.kjmagnetics.com/proddetail.asp?prod=D68PC-RB&cat=163

-A

[blackstone]

what do you mean by something steel in regards to a miniature ? At the moment I am working on this.

An example I saw was a set of 15mm tank turrets. Each turrent had a magnet in but each tank chassis just had a steel tack head. If you can find something steel to embed in one half you only need one magnet.

Or this.

For polarity you can buy a pole detector or use a marked magnets.

[agentbalzac]

I am complete convert to 3mm (diameter) x 1mm (thickness) disc rare earth magnets for 15mm tank turrets, 1/600 aircraft, detachable schurzen, 'swappable' bases for 28mm guns &c. &c.

However, in my experience the really cheap (Chinese eBay) magnets tended to oxidise to a grey powder and crumble quite easily after a few months in storage, whereas sourcing slightly more expensive ones from a (in my case local) Australian dealer yielded much better quality - not sure why - possibly the chrome coating? 

It's true that you can make life easier for yourself by using only one magnet and a suitable steel nail head or some other attracting material, but I have also found that in some applications there's nothing quite like two appropriately attracting magnets.  It's as simple as determining the polarity you need, and, immediately prior to attaching the magnet with CA glue, marking one face with a Sharpie marker to ensure you remember which one is right (i.e. you can mark either face, as long as it helps you with the polarity).  The marking does not inhibit superglue.

Anyhow, good luck, once you've gone down the RE magnet path, you'll never look back.

Graham

[maxxon]

However, in my experience the really cheap (Chinese eBay) magnets tended to oxidise to a grey powder and crumble quite easily after a few months in storage, whereas sourcing slightly more expensive ones from a (in my case local) Australian dealer yielded much better quality - not sure why - possibly the chrome coating? 

The magnets are available both coated (nickel usually) and uncoated.

You want the coated ones.

I order mine off DX and they work just fine.