My RSM2 Circular Sock Knitting Machine was designed by difl January 16, 2021 the files are available on Thingiverse. It is a 3D Printed Legare Style Machine that was printed and assembled by my husband March 30, 2022. This model operates in a similar manner to an Antique Legare CSM with the Cam Shell. Yarn Guide and yarn rotating around the cylinder to create the stitches. It is considered to be a Closed Cam machine using 12 gauge Brother KR850/KR838 Ribber needles cut down to 79mm/7.9cm long (measured from the top of hook to bottom of butt). I am using a 48 slot cylinder designed by Gebsews.