How was this timing pulley made? - Practical Machinist
Aug 17, 2015· There used to be a GKN factory in Lichfield which is near here that did pretty much nothing but timing pulleys. They were Pressed and sintered in huge Cincinnati hydraulic presses,I bought a surface grinder fitted with an optical dividing head which I believe was used to make the punch part of the press tool. 08-17-2015, 04:45 PM #6. smalltime.