Two Tooth Ratchet to Download and Make.

A new and interesting paper mechanism to download and make. Pull the tab and the drive wheel advances hald a turn at a time with a satisfying "Tick – Tock!" Because the mechanism turns the wheel half a turn it makes the mechanism perfect for automata with two states, Up/down, in/out, 1/0, left/right. Check out the website to see the YouTube video.

Members can download this model for free! More info…

Three Tooth Ratchet to Download and Make.

While we are talking about ratchets, don't for get the three toothed ratchet project. Pull the tab and the ratchet advances by one tooth. Three pulls and the wheel turns a full circle. An interesting mechanism to download and make or as a starting point for your own projects.

More info….


Member of have free access to all sorts of interesting downloadable projects. All members can download all the models from the show case on the home page as well as all the members only projects in the shop. On top of all these amazing downloads, members have free access to many of the paid projects in the shop. The longer you remain a member, the more shop models you can download for free. All the remaining models in the shop are half price for members. Of course, if you can't wait to get your hands on all the models, projects and downloads or you can buy a membership+ and have full access to everything! is run entirely by the support of members and shoppers on the website. Thanks to everybody who has signed up for a membership! Don't forget that if you are retired or a student you can receive a 33% discount on the annual membership rates! Drop me an email for details. [email protected]

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Broughton Moor
t. 01900 814333