Turbofan Spinner Keychain

A mini turbofan-inspired keychain with a real ball bearing inside—so you can spin it anytime. It’s a compact EDC fidget with a satisfying, mechanical feel in the hand. MaterialsPrinting filament: TPU & PLA (selective)Ball bearing 8*16*5mmFlush wire cutterPrinting & Assembly (2 plates)PLA support (selective)TPU main body (slow printing speed is recommanded)How to assemble during printingStart the TPU print.At the first pause, place the PLA support into position and resume printing.At the second pause, insert the ball bearing, then resume to seal it in.After printingUse a flush wire cutter trim off the support wall.Tip: Dry your TPU well before printing. If it doesn’t spin smoothly (often due to TPU stringing from moisture), use a thin needle/pin to carefully break and remove any internal strings