This is a 3D printed circular sock machine from printables:
https://www.printables.com/model/355228-circular-sock-knitting-machine-for-my-mom-and-you
And here is the video from Hella Knits on how to assemble the machine:
https://www.youtube.com/watch?v=iB5zFnxnUo4
And here is a video on how to complete the toe using a Kitchener stitch:
https://www.youtube.com/watch?v=z15WOX02mKY
