Just saw this, looks pretty good attempt and have some nice ideas. Which one of you made this? https://github.com/toastfr35/KhordUino
I'm quite sceptical about the stiffness of the mounting table, but the Arduino-based motor is a wonderful idea! Next step should be to develop a "WiseUino" to be adapted on existing manual machine !!
I actually think the ring ball bearing distributes the load through the table better. Geometrically it is more sound than traditional stringing machine design. Obviously the material used is less than ideal but if a DIYer has means to machine stiffer material it should be superior. I also like the fact that it stay away from the traditional design. Stringing machine need innovation instead just repeating the same boring formula.
Interesting design ideas! I like the consolidation of forces to a single plane. And use something like the discho(??) Ring mounted racket, and add a big ball bearing all around! I'm hoping a next version could implement some form of fixed clamps. And I'm curious to see additions to the usability for weaving and such. And perhaps that the side supports could be controlled in the same way the 12 and 6 o clock supports are, that seems more secure. An open source wise would also be very interesting! Hope they make a longer video!
He has the files online. https://www.printables.com/model/612845-khorduino-badminton-stringing-machine