Thread: How to build a Duvall style roadster windshield.

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The next step is to decide how much to trim away to leave the "perimeter frame". A word of warning---we are going to weld a peice of metal "glass channel" from the windshield shop to the drivers side of this thing to hold our auto glass, so get a peice of glass channel first, bend it to follow the top of the cowl, the outside of the perimeter frame, and the inside edge of the perimeter frame WARNING---do this while the template is still in place, because there will be some triangulation come into play here.. Use a pencil to trace around the inside edge of the bent glass channel, then allow at least 1/4" more---when we cut the frame, we don't want to see this glass channel from the outside of the car.---At this time, trace your cardboard pattern onto some rigid 1/8" plywood or Luan mahogany door skin--there is too much flex in the cardboard now to serve our purpose any farther. When we do this, add 1/4" to the end that was up against the side of the plywood "fin"---remember, these two frames have to meet in the center, and the plywood fin was 1/2" thick, and we were witnessing of the side not the center when we built our template.