stihl038x2
ArboristSite Operative
I'm only on my second one but been cutting the chamber on a 2* taper. Been thinking of trying a taper on the crown with a 2* difference between the squish band, like 4* on the squish band and 2* on the piston.
The last one I did was a MS660, flat for ~.075" then 2* taper to combustion chamber. I like the idea of tapering the piston top too, I'll probably try one at some point as well. Maybe even taper (to match squish band), up to a pop-up.
Steve