Are you a fellow cuber? Then, this post is just for you. Chances are that you have been messing around with magnetized cubes or are wondering how you could select suitable magnets for cubes. When you decide to magnetize your cube, there are a few things that you will need such as some type of glue, the cube, and a few magnets.
The cube might appear the same at first and it might not matter to you at first but that’s not the case. There are different types of cubes out there and you must understand this. The thing that matters most when it comes to cubes is the thickness of the plastic since it is what directly affects the distance between the magnets and the strength that pulls magnets towards one another.
Remember, the thing is that the distance is about twice the thickness which could easily be measured with a caliper. The magnets that you use should be checked to see if they fit into the cube. The feeling of the cube is not significantly affected by the glue. However, if you are someone that tends to drop their cubes often, then it might also need to be considered.
The glue also affects the weight which is important if you want airy things. Superglue is commonly used to attach the magnets but epoxy is a better choice if you weight the ability to drop the cube by ensuring that the magnets do not get out of their place. Save about 1 to 3 grams of weight by doing so over time.
The most import thing is the magnets. For ease of consideration, let’s assume that neodymium magnets are used since they are the strongest magnet out there and are still affordable. Neodymium magnets are available in different sizes and grades. Both of these directly impact the strength of their magnetic field.
The grades differ significantly. The strongest grade is the N52 and the weakest grade is N35. It is advised not to use the lowest of the grade to save some grams. Try to find a higher grade magnet which is as strong as the lower grade. It is advised to use magnets which are about 3.5 to 5mm in diameter, are 1 to 2.5 mm in height and are from grades N42 to N52.
Now that the theory has been covered, the math will be discussed henceforth. There is no need to worry because a calculator can be used. You can use the calculator on your smartphone or laptop. The first thing you need to do is put the distance between the magnets and start messing around with the other variables by making changes to the specifications of the magnets. The magnet force should be around 0.07 to 0.14 lb. Remember, anything more than 0.16 pounds would ruin the cube. While anything that is below 0.05 lb would cause an insignificant difference. It is advised to try out with 0.11 lb. .