The principle of gear transmission is assembled by 3mm basswood board without glue, and the rotating part can be coated with candles to make the rotation smoother. it takes about 30-60 minutes to assemble.
original machine: beamo/built-in wood engraving, cutting power and speed
note: the cutting power of new and old machines may be attenuated. if the parts are not smooth after cutting and assembling, it is recommended to adjust the size by yourself.
suggested materials: 3mm, a4 basswood board, music box needs to be purchased by yourself.
video https://youtu.be/69tzrh-5kys

Summer breeze music box

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