Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Well...I got to mod my Piston today!...first pic is fresh off the lathe... second pic I have polished the dish and top half to about 1000 grit...there was a distinctive zipper or record player groove texture to the piston...for now I have left some of the texture on the bottom half for oil to get into...but may fully polish later.
   She runs slower!...I need a tach now to tell how much, but need to work on the Governer springs first to get more fine control.