Golden Ratio Seahorse Gears

Name: Golden Ratio Seahorse Gears (3D printed)
Brand: Hark Tech
Price: 6.90 GBP
Availability: InStock

Small parts from £4 printed to order · UK postage from £2.95, free over £40 · usually dispatched within 2 working days
Arrives damaged? Free reprint, just film the box being opened. Returns policy

Free community design ♥ 2,440 likes ↓ 25,522 downloads

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PLA from £4 plus UK postage from £2.95. We prepare your model, print it across our calibrated production fleet and quality-check it before it is usually dispatched within 2 working days.

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We didn’t design this model. It’s a community file from its original creator, and now and then a file has a fault that only shows up when we print it, such as walls that are too thin or parts that don’t join properly. If that happens we’ll let you know and try to fix the file, which can add a day or two. If we can’t get a good print from it, we’ll refund you in full.

Good to know before you order

TPU has a £11.50 print-order minimum. ABS, ASA, PC, Nylon and PETG-CF have a £46 minimum; PA-CF has a £69 minimum. Delivery is shown separately in your cart.

Need a few parts? Add them to one cart. One order minimum and one postage charge cover the cart: £6.90 for standard materials, £11.50 with TPU, £46 with ABS, ASA, PC, Nylon or PETG-CF, or £69 with PA-CF.

Please check the model files include everything you need before ordering. We print the files as published by the creator, so you receive the parts in the model, not necessarily a finished assembly shown in any photos. These are community designs by their original creators; we manufacture and post them but cannot guarantee fitment for your specific appliance or use case - check the original design page for compatibility.

About this print

A pair of non-circular decorative gears shaped to resemble a seahorse, designed around the golden ratio. The gears come in two versions: a latching variant that clicks into a fixed position, and a smooth-running variant suited to motor-driven applications. They serve as a functional demonstration of mathematical art, showing how the golden ratio can be applied to gear geometry. PLA is a practical choice for display or low-load mechanical use.

From the original design page

Original maker's notes

By Ebb_Flow on Thingiverse · CC-BY-SA

## Golden Ratio Seahorse Gears

![animated gif](http://i.imgur.com/9HVIzAV.gif)

Inspired by Nautilus Gears by MishaT:
http://www.thingiverse.com/thing:27233
Update 9/8/14:
I added a new smooth running seahorse gear version (v3). The new version does not latch into a closed position and is suitable to drive
with a motor, etc.
To clarify, choose the version of the gear based on desired action.
Gear v2 - Latching
Gear v3 - Smooth running
Enjoy!
Update 6/9/14:
Added DXF files, so hopefully people with laser cutters can try this out too.
Update: 2/27/14:
New Version (2.1) of the arm. I replaced the pins with simple holes. Use raw 1.75mm filament for the pins/rivets, using the methods described here for using rivets as hinges. Look at the section titled 'USING FILAMENT TO MAKE SOLID RIVETS AND HINGES' towards the end of the article :
http://makezine.com/projects/make-34/skill-builder-finishing-and-post-processing-your-3d-printed-objects/
I used a lighter instead of a heat gun. It's quite easy and much stronger than a printed pin.
Update 2/26/14:
New Version with stronger pins.... is a failure. Pins do not mate properly. I have a new vetted design with a simpler pin made from a raw filament 'rivet'. I'll post updated files and instructions on 2/27/14
Update 2/26/14: New Version with (hopefully) stronger pins.
Units are now in Metric.

Formatting may have been simplified. These are the independent maker's instructions and fitment claims; Hark Tech has not independently verified them.

Printing Golden Ratio Seahorse Gears

For Golden Ratio Seahorse Gears we would normally reach for PETG — it is tougher and more heat-resistant than PLA, ideal for parts that take load or live somewhere warm. We set the layer height, wall count, infill and supports to suit the model and how you will use it, and those choices are already priced into your instant quote. Want a specific colour or material? Tell us and we will match it where we can.

Model details

Downloads at source	25,522
Likes at source	2,440
Original model	View on Thingiverse
Designer	Ebb_Flow
Licence	CC-BY-SA

gears Golden Number golden ratio mathematical art Non Circular Gears seahorse

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