Someone asked about using glass fibre (can't remember who) so heres how i sorted the dash ends, I'm no master laminator but this is how i do it and nothing has fallen off any of my cars yet.
The dash isn't quite right at the ends and we didn't have one to mould from so we borrowed another glass dash and moulded from that but its not quite right at the ends, I think maybe its a 39 dash but not sure.
I had previously made the framework to bolt the dash too at the bottom. The discrepancy is with the ends, It don't look to bad in the pic but the end is actually about 3/4" shy of lining up with the body line.
First job was to cut a piece out and get it into the correct position, Next i cut a filler spreader into strips and screwed them in place to hold it altogether.
Next some body filler was mixed up with extra hardener to make it go off quicker, this was spread on quickly and once hard (about 1 minute) would hold it all in place for glassing the rear up.
Once on the bench the surface was given a good key with a grinder and the edges feathered to a knife edge, you need to remove all the semi shiny coating on the old glass.
Then some resin was mixed and small strips of mat stipled with resin, you just need it wetted not dripping as to much resin will weaken the joint.
The strips were applied in 3 layers and allowed to dry.
Once the rear was cured the dash was flipped over and the same done to the front but only 2 layers this time. The curve inaccurancy was cured by adding chopped mat & resin until level with the body line.
Then its all sanded to give a key for a skim of body filler.
http://i65.photobucket.com/albums/h2...S/68a0345c.jpg