Precision Piston

Precision Piston is a machine part used to craft a Diesel Engine. It requires the use of a Multipurpose Newcomen Engine to craft. It can be added to Diesel Cylinder Head to get Diesel Piston Head

Crafting
Fire a Steel Ingot at a Firing Forge using Wooden Tongs. Then use the hot metal on a Firing Newcomen Hammer once to forge a Piston Blank (Note: Hot metal cools after 10 seconds). Use the cool piston blank on a Firing Newcomen Lathe to get the Precision Piston. Using again on the lathe will craft Steel Valve.