Four Bar Mechanism.

This interesting four-bar linkage mechanism produces a movement that swishes back and forth in a rather charming way. 

Use it to explore the mechanism or as the starting point for your own animated paper character. 

Members can download the parts for free at the link, non-members can download the parts for £2.50ukp
Download the file…

Starting Point Mechanisms

These downloads feature a mechanism or group of mechanisms in a box ready for you to add your own characters. They are the perfect starting point for the maker, hobbiest or student as a spring board for creating your own paper automata. I’ve collected together links to some of the recent mechanisms here, follow the links to see them in animated action.

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Four Bar Mech Rack and Pinion Geneva / Crank Rotating Vertical Shaft
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Twister Stepped Rotation Scotch Yoke Ratchet

They are all free to download for members and I’m very happy for them to be used in schools. I suggest a Membership Plus subscription for school. If you are a member you can make as many copies as you need for your class.

What are you waiting for? Become a member now!

RI Complete, download of all projects!

If you prefer to have all the projects from robives.comin a single download then the ricomplete archive is for you. It contains every project from, every download (including instruction pages), every e-book, every collection. That’s dozens and dozens and dozens of projects all in one massive download instantly accessible on your computer.
Price is as follows:


Non Members – £29.95 / $44.95
Standard Members – £25.95 / $37.50
Members Plus – £14.95 / $22.95
Order your own copy…


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Broughton Moor
t. 01900 814333