I am getting ready to make the piston for my Elmer's #29. The cylinder is made of brass. Which would be better Aluminum or Brass for the piston?
http://www.homemodelenginemachinist.com/f31/first-engine-elmers-29-a-16286/
Ed
http://www.homemodelenginemachinist.com/f31/first-engine-elmers-29-a-16286/
Ed