Nickel Fidget Spinners (C Bearing and 608 Bearing versions)
thingiverse
Two versions of my Nickel spinners, each holding 9 nickels for weight. One version utilizes a C size yoyo bearing, while the other employs a 608 size skateboard bearing. I create four solid top and bottom layers with 30% infill for the spinner body and 50% infill for the buttons. Spinners do not require supports, but the buttons necessitate them for the recessed thumb indent. I prefer filling the indents with flowable silicon when finished for a nice grip. All holes for nickels and bearings are a very tight fit, requiring you to press them in using a press or hammering them in firmly; they need to be snug like that to securely hold the bearings and nickels without them falling out.
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