3 ms·
> replicate the elaborate machines that engrave currency I think you may refer to a rose engine, which in operation is very close to a dimensional spirograph.
by adolph 3y ago
> replicate the elaborate machines that engrave currency
I think you may refer to a rose engine, which in operation is very close to a dimensional spirograph. A modern variant might be a core-xy open etch-a-sketch using those LCD writing tablets and a set of physical gears and pins that would control the stylus' motion, maybe powered by a folding handcrank like the Panic Playdate. It might even be a tool for teaching the Fourier series.
rose engine: https://www.youtube.com/watch?v=Gw3aCAQjC88 https://www.youtube.com/watch?v=Gw3aCAQjC88
core-xy: https://corexy.com/ https://corexy.com/
LCD writing tablet: https://www.mi.com/global/product/mi-lcd-writing-tablet/ https://www.mi.com/global/product/mi-lcd-writing-tablet/
Panic Playdate: https://en.wikipedia.org/wiki/Playdate_(console) https://en.wikipedia.org/wiki/Playdate_(console)
Teaching Fourier series: https://www.youtube.com/watch?v=qS4H6PEcCCA https://www.youtube.com/watch?v=qS4H6PEcCCA
Also, projects on Hackaday: https://hackaday.com/tag/spirograph/ https://hackaday.com/tag/spirograph/
- quickthrowman 3y ago> rose engine The watch manufacture Breguet (part of Swatch Group) still uses rose engines to make guilloché dials by hand, the effect is visually stunning. Strangely enough, you can get a precious metal Breguet watch with a guilloché dial for less than the secondary market price of some steel Rolex sports watches. Article: https://revolutionwatch.com/the-breguet-guilloche/ https://revolutionwatch.com/the-breguet-guilloche/ Video: https://youtu.be/aTo3ff9fzdU https://youtu.be/aTo3ff9fzdU
- adolph 3y agoThank you for those links. Once upon a time I'd look at those watches and think "ok, fancy scratches" and now I think of them as an apex of math, machine and human touch. Reading about Breguet's work is amazing--all the things he invented and working through and escaping the French Revolution. https://museum.seiko.co.jp/en/knowledge/inventors_03/ https://museum.seiko.co.jp/en/knowledge/inventors_03/ https://en.wikipedia.org/wiki/Abraham-Louis_Breguet https://en.wikipedia.org/wiki/Abraham-Louis_Breguet
- JKCalhoun 3y agoLove the Hackaday projects.