The design and prototyping of a 3D Printed Swiss Lever Escapement Watch Clock, spring driven

I am experimenting with making it spring driven, using a pull star recoil spring. One was not enough, so I used 2
Also experimenting with the hair spring adjustment to improve the time keeping
Links to resources that I found for the design
Escapement:
On Mark Headrick's Horology Page, Download his book, "Clock and Watch Escapement Mechanics,"
Project Gutenberg's An Analysis of the Lever Escapement, by H. R. Playtner
An excellent video on how to hand make a watch escapement hairspring:
And the book that inspired the video of the spring making:

Spring link:

Timing App, Cuckoo clock Calibration on Apple App Store:

Other resources:
On the construction of a simple and mechanically perfect watch
Prize-essay ... on the detached lever escapement for watches

Link to an open source watch escapement here:

[jeanclaudesalertimpression]

Bonjour Jacques
Encore du très très beau travail,
Jean Claude

[bodomarton]

Dear Jacques what kind of a spring/metal did you use for the balance spring? It has been driving me crazy, because with 3d printed PLA i can't get it to have enough force to spin the wheel back.

[alessiocurti]

To adjust the balance frequency, what are the app's settings for an optimal working?

[DavidM]

Jacques, I really hope that at some time you will publish plans for your clocks. There are only 2 good sources for plans that I have found - Brian Law and Clayton Boyer ( although I'm sure there are a couple others.) And if you do, please make them available in DXF files for CNC. You are really creative and it would be nice to see other builders' interpretations of your work ( including me.) I've made wooden clocks and am currently working on a couple that I am adapting to making with aluminum and carbon fiber.