In 9th grade, somebody would always shout "Show-off!!!!" I find it amazing that you can "drill, file and punch" your way to that beautiful result. My first attempt at chassis drilling was for the Piccolo. The chassis looks like crap (not doing justice to the sonics). I gotta hand it to ya, you are very skilled at metal work. But, hey you are an artful analog design engineer. How can you justify that time expense for these chassis (what's the plural of chassis?). As a respectful customer, I would much rather you sit and think , as opposed to filing, drilling and punching! That had to take you a week!!