Incredibly Strong & Very Useful magnets
I purchased these magnets primarily for detecting counterfeits of collectible coins and gold bullion.
Most genuine U.S. coins are not magnetic at all (one exception is the 1943 steel penny) and some fake gold bullion bars (and maybe fake coins too) have a steel core. All steel is mostly iron which will always stick to a magnet. Silver and Gold are not magnetic so most coins and all bullion will NOT be pulled by or stick to a magnet. A 1943 Lincoln penny passes or fails a magnet test in the opposite way.
I intend to use only 4 to 7 of these magnets together as a cylinder for that purpose and use the others for some other useful purpose. They are much stronger than other types of magnets and will hold any paper to a refrigerator easily (2nd practical use).
They are incredibly strong for their size and are a little difficult to separate. I recommend that you keep them in the original container when not in use, because they will snap to any steel,...
They really mean "Super-Strong"
I was leading a group arts and crafts project which required a magnet. I thought due to the size it would be just a normal little magnet, but it was almost like a cartoon trying to use them! First, it was REALLY hard separating them. Then our watches, keys, pens, notebook binders, jewelry and nearby metal dishes and cutlery (I'm not kidding!), and any and all other things metallic, would get stuck to them and were very hard to pull back off. Once you managed to get it off, it would almost invariably get immediately stuck to something else next to you. It was actually quite hilarious seeing a room full of 12 people each going through all these same motions. It literally looked like an SNL skit!
The warning on the label says to keep them away from pace-makers and "do not eat". I'm certain they would indeed short out a pace-maker. Considering how funny it was trying to work with them while getting stuck to everything in the vicinity, we decided to seriously heed this advice...
Perfect for a stainless steel refrigerator
Previously I bought the 3/4" x 1/8" magnets and they are incredibly strong, in fact too strong for my fridge front. Most of my magnets won't stick to the front of my stainless steel fridge at all and it's always bothered me. Now though thanks to $10 getting me 24 of these little guys I simply wrip off the old magnetic backing and glue these on or just glue these straight to the magnets. Although these are small they are still incredibly strong and one can easily hold up a multipage brochure on the stainless front. Nice.
I used Gorilla Super Glue which cured in 30 seconds so they worked great. One thing of note though was the fumes coming off of any excess on the sides will adhere to the fridge face so if you use this glue make sure to let your magnets sit by themselves for at least 24 hours before placing them on your fridge.
Update Feb 21, 2013
Even if you let your glued job cure for 24 hours it will still leave a residue on your refrigerator. I had...
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