Review on 💪 Ultimate Magnetic Neodymium with Maximum Corrosion Protection by Isaac Maze

Among other things I use them on three steel doors to hold the curtain rods that hold the curtains. They're pretty strong for their size (1/2" base diameter) and I'm very happy with their (parallel) holding power. I docked a star to two hooks that don't fit in their base and lowered them. to fridge magnets. Simply put, a magnet's PULLING FORCE (in kilograms or pounds) measures the amount of VERTICAL force required to pull a magnet away from the metal surface it's sticking to.As applied to these magnetic hooks, this means that anyone of them, when attached to a metal CEILING, is rated for a maximum holding force of approximately 22 lbs/10 kg before detaching from the CEILING (assuming all other factors are ideal) of the same material as made the ceiling and will push the wall much more easily than will push the ceiling.This is a PARALLEL HOLD or FORCE TO SHIFT magnet and is not nearly as strong as his FORCE TO HOLD.The concept explains why two e.g Magnets glued together are easier to pull apart when you pull them apart than when you try to pull them apart. Manufacturers usually refer to REMOVING FORCE when specifying the holding force of a magnet. Clamping force is determined by the MAXIMUM WEIGHT the magnet will hold DURING IDEAL TESTING. The PARALLEL HOLDING/SHEARING FORCE can reasonably be estimated to be between 10% and 25% of the magnet's PULLING FORCE. With this in mind, we assume a 15% PARALLEL POSITION for these 22lb rated hooks (22lb x 15% = 3.3lb). Based on this assumption, we can expect each hook (when used on a metal wall or door) to hold about 3 to 3 1/2 pounds of weight before sliding down the wall. Obviously that's a lot less than the 22 pounds it needs to hold when used on a ceiling. As the magnet fails at a lighter weight when used on a wall than when used on a ceiling, this does not mean that the magnet is defective, it merely shows in real life (and possibly to the dismay of the user) the difference in ATTRACTION STRENGTH of the magnet (in this case 22 lbs) compared to its PARALLEL HOLD/SHEAR (approximately 2 1/4 to 5 1/2 lbs or 10 to 25% of 22 lbs). In addition to orientation, there are other factors or conditions that affect a magnet's performance and weaken its strength, such as: etc.), its size and shape. Magnet "curved" or not? (Cupped = the magnet is placed in a steel "cup" or "holder", as are the magnets on these hooks. The cup "focuses" most of the magnet's attractive force in one direction [the open end of the cup] and increases its holding power.). Was the magnet stored correctly (this is important), did it fall off? (falling magnet = not good)** What about the metal surface the magnet is attached to? How thick is the metal? (thicker = better) what is the TYPE of metal, what are its components? Is the metal BARE and CLEAN or is it coated, painted, dirty, greasy, rusty? Is the surface perfectly FLAT, or is it curved or uneven, is it perfectly SMOOTH, or does it have texture, roughness, bumps, dents, chips? ANYTHING INTERFERING WITH THE 100% COMPLETE AND DIRECT CONTACT BETWEEN MAGNET AND METAL will reduce the power/strength of the magnet.** What are the environmental conditions like? - Is there moisture, what is the ambient temperature and humidity?, what is the temperature of the surface, the magnet? and much more. I find the physics of magnets and magnetism fascinating, yet technical and complex enough to blow me straight out of a science book! Luckily for most of us "average consumers" this BASIC understanding of PULLING FORCE in relation to PARALLEL HOLD is probably the most useful (and easy to remember) when choosing a household, craft, hobby or shop magnet for a specific task. .