This is a precision machined  flip over top. These tops have existed since the late 1800's in Europe. The shape and weight distribution have to be precise in order for them to work as they should.The first time that you spin it, if it is spun fast enough , you will be amazed at what it does. As the top accelerates,the stem starts to move downward toward the table / spin surface. It then flips over and spins upon its stem for several seconds before finally coming to rest in the upright position. It takes some practice to spin it , and the first few times you try, the top will probably go out of control flying across the room. If you don't have the patience to take a few minutes to learn to spin it, this top is probably not for you. This top will only work on a smooth surface such as a hardwood floor, granite surface, glass or smooth table top. The smoother surface, the better. When starting out, you will want to try it on a cleared table or floor to allow plenty of space for it to dance around. It needs room to do its thing. Once you're good at spinning it, you can get it to invert on a 5" concave mirror which will keep it contained and also let it spin longer. I have made these tops out of heavier metals like brass and stainless, but the weight makes them much more difficult to spin fast enough to get them to turn over. The top in this listing is made of 6061 aluminum with the natural silver colored finish. During a spin,at some point the entire outside surface of the top comes into contact with the spin surface which leaves scratches and dings on it. I have found that if the aluminum is polished to a mirror finish , though it may help it to sell , it won't stay shiny for long, so I don't polish them. The natural finish seems to stay looking good a lot longer. This top is 1 1/8" in diameter and 1 5/16" tall. Unlike conventional spin tops, these do not have long spin times and they are designed to wobble. Many people appreciate tops for their therapeutic properties, and this one delivers in that regard. While most tops don't give you much of a display, this one transfixes. People who see it don't believe it. This top is handcrafted using manual equipment , from domestic materials. A black velvet carry bag is included. I check each top to make sure it flips over and spins properly. The video shows the top in action ( the video may be slow to load but give it a minute and it will play). Warning: Playing with these tops can be addicting.
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