Print in Place Music Box
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PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
# Parametrized Music Box - Print in Place
also on [MyMinifactory](https://www.myminifactory.com/object/3d-print-143523)
and [GitHub](https://github.com/tmackay/ParametrizedMusicBox)
Musical calculations remixed from [Parametric Music Box](https://www.thingiverse.com/thing:53235)
[See it in action](https://youtu.be/H7jwQiykk-s)
[and in closer](https://youtu.be/OX5avwUwEng)
I'd strongly suggest ABS or something with good fatigue resistance for this one. Not only does PLA not have a good "plink", the fingers won't survive long from being repeatedly plucked. (see below)
Print at 0.2mm layer height (check in preview that the 1-layer gaps are preserved when slicing). Somewhat sensitive to bed level and overextrusion so dial your printer in with a tolerance gauge.
Don't get your hopes up, I was somewhat disappointed by the acoustic properties of PLA but it's a nice little toy none the less.
Post-printing, free up the gears by turning the knob clockwise (due to the direction of the herringbone gears - less likely to break). I use a 5/16" socket to get a bit more leverage on the knob. The key is controlled force and repetitive small motions until it breaks free.
Next use a straight-edged razor to delaminate the two ring gears. Just wedge it in enough to hear a small crack all the way around. Turning the gears will do the rest.
Some of the "fingers" will free up on their own, the others can be helped gently with the razor. A sliver of an aluminium can can be a…
