Repair cog for Music box.
Teanola and similar 20 notes scroll playing music boxes.
The 20 notes music boxes has a flaw that makes one of the cogs break easy if the scroll is blocked. With this robust cog you can not only repair the music box but prevent this flaw from ever happening again.
Use a plier to bend the flaps so that you can remove the original cog. the new cog just exactly fits so you need to apply some pressure to get it into its position.
It is only printable in brass because attempts with other materials has proven too fragile to last in the long run.