I don't have a lathe or access to one, but I do have a drill press. Is it possible to do some knurling that way using a scissors knurler held in a drill press vice? Something like this one:
https://www.ebay.co.uk/itm/Medium-Cl...IAAOSwYL9Z1SCi
Material would be copper rod, 12mm diameter. The idea is to make a safety razor handle.