In a number of my Clock books it references KEA108 as an excellent material for cutting clock pinions. I believe that it was really nice and free cutting yet could be hardened due to its high carbon content. Does anyone know what would be the nearest replacement to kea108. My understanding was that is was banned due to selenium content.
Apparently 01 tool steel is not a good substitute. Would en24t be the nearest?
Anyone by any chance machines with these steels and could give a comparison? Remembering that wi tiny pinions your trying to fly cut tiny teeth so the more free cutting the better! I tried "silver steel" last time and got quite a bit of chatter. Of course that could have been my setup but thought I'd ask for future to see what other options I had.