I am showing my sock knitting machine complete with ribbing attachment, and I run through some issues around making it, and also learning how to knit scoks. Credit to Mr Roboto19 on Thingiverse for the files, he has done a marvellous job on these: https://www.thingiverse.com/thing:4695746 Here is a remix file Mum V2 also well worth considering as it uses the excellent MrRoboto19 files and covers some issues and looks very good: https://www.printables.com/model/355228-circular-sock-knitting-machine-for-my-mom-and-you-