I first started working with glass frames as a result of Denise Ross's description on her website " Thelightfarm.com". The only thing that I he added are the "Guides" on both sides of the puddle pusher.
The purpose of what I have labeled as "guides" in my diagrams is to hold the Puddle Pusher to one path. All sheets of glass are glued down and do not slide.
creative commons license. Not that I actually care what happens with it ;)