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I made this thing all the way back in September and only posted it it when it was completed in December. Back then fidget spinners where absolutely nowhere as common or known, and bearings weren’t exactly as cheap (in small quantities.) Nowadays you can get 30 608ZZ bearings for like 17 dollars. Back then I spent all my money on other project and fidget spinners weren’t exactly as profitable or worth the time as they are now. By no means whatsoever are these fidget spinners better than bearing’d fidget spinners, but when I ask the question: "are the bearings truly necessary?” Is very subjective. I for one like bearing less fidget spinners because they have a feeling to them, and they aren’t exactly smooth so they have a small vibration and sound that I enjoy. With bearing’d fidget spinners there isn’t that kind of constant tactile feedback (if you get what I mean.) Also, since most FDM machines aren’t perfect, each one of these are unique in how they are fabricated. So, really its ones opinion which is better r which they like more. I’m just a mechanical person so you can’t really blame me. :)