On Tue, 13 Apr 1999, Brent Russell wrote: > > Hi All > > I was having some thoughts on how to fabricate a large lightweight ribbed > blank. > Any thoughts on this, or am I out of my mind? > > Brent It's been done.See my article in S&T july 1984 "The real making of a mirror" in the Gleaning section. (Stabilite copied the process by the way). Ric