Pat, I agree, usually Germans tend to overengineer, but that baffle stack is efficient and above all, very cheap. I think the future of baffles is computer modeling, analyzing gas flow and thermodynamics with some serious computing horsepower, similar to the way NASA and aero enginers model flow ove...

May I add my own Form 1 can enroute? This project is going very well!

http://www.ar15.com/forums/topic.html?b=3&f=14&t=233879

The height of a thread form, from crest to peak, is mathematically defined by the formula D=0.866 / N where D = depth of the V form, from peak to base, and N is the turns per inch. Note that the diameter of the tube is irrelevent. The thickness required varies only with the pitch, with finer pitches...