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Old 06-11-2015, 03:50 PM
qkiss qkiss is offline
MetalShaper of the Month February 2020
 
Join Date: Apr 2015
Location: Fortuna California -- up north behind the redwood curtain
Posts: 191
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Poster board patterns being developed.
The patterns can have several layers of poster board and masking tape on it to develop a good fit.If you look closely you can see the tape.The round washers were turned on a lathe to the appropriate size to accurately transfer punch the centers.
To fit the panels around a tube they must go past center from both sides with flanges that over lap if they are to be riveted or screwed together with fasteners. If it is to be welded a 3/16" - 90 degree flange can be broke on each panel on the center line and fusion weld the flange lips together. The firewall material is 22 gauge cold roll .029.
The transmission opening in the firewall has a 1/4" 4130 tube welded to it to soften the edge and as a stiffener. The transmission tunnel will be removable and the transmission will go in and out from the inside of the car.
There are 3 panels meeting at the tube. Note how the clecos are on the tube center line of the over lapping panels.The lower panel is stepped down @ the top panel parting line and the top panel has a little edge treatment in the same area.
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Last edited by qkiss; 07-09-2017 at 09:40 AM.
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