Hand-Crank Rotating Christmas Tree with Real Gear Train and Toy Train, Music Box Style, No Supports

Turn the crank on the side and the tree spins. A toy train circles it on a ring that turns the other way. The model is about 20 cm tall. Its music-box style base hides a real two-stage gear train, and you can watch it work through two gear windows. **How it works** - Stage 1: the crank turns a 12-tooth, module 2 spur pinion. The pinion drives a 36-tooth crown (face) gear on the central D-shaft, a 3:1 reduction, so the tree turns slowly and smoothly. - Stage 2: on the lid, a 20-tooth herringbone…

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