BiMetal stirling piston barrel with graphite piston fitting.

Good shot of raw 1.250" graphite rod and a stainless outer jacketed polished copper bore. Bad lighting sorry, I used a very sharp shortangle metal drill on slow 800rpm Interference: .0009 - .0014
not for Nexus6 stirling but research and practice perhaps for a small LTD.
If there is intrest in short run parts please post or email. While I am making spherical stainless flanged hotcaps etc. I may list extra materials if anyone is experimenting with these at home or school.
S

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