Gear for Shiatsu Massage Pillow ("Moustache" brand)

Replacement gears for the Moustache-brand Shiatsu massager sold on Canadian e-commerce sites 123ink/ShopperPlus. 

We've had two of these units and found that the same gear often gets shredded after prolonged use. Used this OpenSCAD script: https://www.thingiverse.com/thing:3561972 to create a gear that matches the size of the one inside the massager. 

Note that there are two sides with different “twist” directions depending on which worm gear the gear interfaces with. Check that you are using the correct side. 

I've sized the center bore with an extra 0.25 mm diameter - you may use “hole horizontal expansion” in your slicer to compensate if your printer is more dialed-in than mine :)