Design and build of a 3d printed Roskopf watch, Part 4, improving the gears

I am designing, 3D printing and building a replica of a Roskopf watch with a FDM Can I make it work and how small can I go? In This Video I am improving the Involute Profile gears With the gears loaded, Last week I had to pull with 600 g to go from a standstill to motion This time, it went down to 150 g What did I do? Reduce the bulging at the end of teeth with a lower print speed, print the outer wall first, added a fillet at the head of teeth All of that was just half of the gain Next, based on my observation, I changed the pressure angle of the pinion from 20 degree to 22 degree And that was another dramatic improvement Links to books about the history of the original, including a detailed biography of G.F. Roskopf and a thorough study of his watch In French: http://www.watkinsr.id.au/buffatFr.html In English and with additional graphics: http://www.watkinsr.id.au/buffat.html I have learned a lot with this book: A Treatise on Modern Horology in Theory and Practice. Front Cover · Claudius Saunier. Crosby Lockwood, 1887 - Clock and watch making - 844 pages. https://www.google.com/books/edition/A_Treatise_on_Modern_Horology_in_Theory/1yVYAAAAYAAJ?hl=en Traité d'horlogerie moderne, Claudius Saunier https://books.google.fr/books?id=vX1JAAAAYAAJ&printsec=frontcover&hl=fr&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false Les Gravures en meilleures qualités https://www.cliniquehorlogere.ch/fr/news/traite-horlogerie-par-saunier.html