Re: [Vo]:Do it backwards: added 1997-style, science-based Vortex

[Terry Blanton]

On Thu, Jun 18, 2009 at 3:33 PM, Horace Heffner<hheff...@mtaonline.net> wrote:

> Note - CR-39 is $400 a sheet.

Maybe we could utilize a polycarbonate lens from some used eyeglasses?

Terry