Mock Rib Hat made on the CSM Maker Machine. It uses fingerling weight yarn like you would use on normal CSM Sock Machines.

This pattern is made for the CSM Maker Hat Machine that is from Germany. The machine has a 220mm diameter cylinder and 134 needles and is mainly designed to use standard sock yarn (420m/100gr) or thinner.

For information on the machine:
https://csm-maker.com/pages/hat-knittung-machine