Review on Versatile Small Round Neodymium Magnets for Fridge, DIY, Crafting, and Office Use by Josue Porter

The magnets came in a small metal jar the size of Altoids Mints. It has two foam sponges so they don't break at the top and bottom of the can and is secured with a rubber band. It uses friction to stay closed, so including tape makes sense. Butterfly included neat but totally useless to me. The magnet inside is a black craft magnet. Let's get to real magnets! Their intended job was to attach a poster to a pull down PVC curtain that I am using as a backdrop. I use these magnets front and back. I wanted them to be as small as possible so the camera wouldn't catch them too well, but strong enough to easily hold the poster. The posters used are actually paper or vinyl and relatively small for a poster or the size of a small movie promotional poster. (I don't have a ruler handy, sorry) If you don't have an anchor to the poster to begin with, it becomes extremely difficult to attach a magnet to the front and back while holding the poster in place. When I mean anchor I mean a magnet strong enough to hold a poster to a PVC curtain. I ended up having to get some large craft magnets for the larger posters to hold in place first and then I added some small magnets around the edge to hold them in place. I was then able to remove the two large craft magnets and they hold in place very well. If you are using a magnetic wall I would imagine these magnets would be more than enough without too much difficulty securing and adjusting. The small paper posters weren't overly complex, however, and were easily held in place by a couple of magnets. This made it easy for me to add more magnets to the edges later. The strength of the magnets can be increased by adding successive magnets on top of each other, but of course the relationship between friction and surface area is important and strength is independent of it. The staying power as far as the coating is concerned is still a bit fragile. Fragments of the coating can break off in the event of an impact at a distance of about half a centimetre. Nothing is worse than splitting a magnet in half or smaller fragments at that distance, but the coating can be important enough to prevent delamination. For me, this raises concerns about reduced surface area and possible scratching of the surfaces of items I'm trying to attach or mount. For others, it can be a problem when children find and eat the pieces. These shards are still magnetized and stick to other objects. If you have children, make sure they are aware of the dangers of these magnets. In terms of strength, two such magnets separately do not offer much resistance. They are in fact stronger than similar sized craft magnets. I'd say they have almost the same attraction between two craft magnets made from a 2" x 1" x 0.5" block, but only when surface area isn't accounted for, if that makes sense. Increased here too the presence of more than one magnet in a row increases the attraction, but there is a limit to this. All in all, it was a pretty good purchase. Do not be careless and make sure children are always supervised around them. (Sun (It's also fun to play "fridge darts", I definitely wouldn't use them for that. Cleaning up the resulting shards isn't fun or easy I can imagine.)