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Rob |
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Take a look at this post
https://allmetalshaping.com/showthread.php?t=684 I made the shape out of home insulation (styrofoam ) then used masking tape to get a more blended flow over a rough surface. the flanges are usually the last process after all the shape has been put into the part, and it fits perfectly to the back of the car on all four sides . you may want to do it in two pieces like i did they are easy to handle and you only need to have a flex pattern for 1/2 of the panel .... the pattern can be flipped inside out for the other half. as for the gap to the trunk lid ....... that line needs to be transferred from the lid while both panels are aligned and in place on the car. both panels are convex in the horizontal and the vertical, so the gap that looks like a fairly straight line is really an arc. good luck Steve
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Steve Hamilton Hamilton Classics Auto Restoration & Metalshaping |
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This is what I would try. Hope this translates from my brain to words...
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Chris (trying to be the best me I can be) |
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After reading your post again, before you do anything else put more shape into the bottom half of the panel. If it fits when you hold it up, but then does not when you drop it down the panel is telling you either it needs more shape (top to bottom) or is not wide enough. Possibly both. Your pattern you made off the trunk looks to have less crown (top to bottom) than what you will probably need, so the pattern is short.
In the one pic you posted it looks pretty close. (img_5575) Have you also considered that the rear fenders might not be where they should be? But everything else being equal try putting more shape into it first. Too bad you already tipped it.
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Chris (trying to be the best me I can be) Last edited by Chris_Hamilton; 01-06-2021 at 01:25 AM. |
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Rob. I would extend the back of the car. It's nicer.
Make a shape and then draw the bend according to the trunk lid. It may be better to start by bending the first edge and always all next steps align to the first edge. The place where you make a bend will not change. See how I did several bends on one piece. The top edge had to be precise. I bent it according to the original part. Even though I bent the part to other sides, it was always possible to return to the original shape of the edge. I didn't touch 1 bent count. It was a limiting dimension. I adjusted the other bends so that the first edge was correct. You throw away a few parts, but it's manufacturable. Good luck. Fear and violence do not belong in the process. Thoughts are more important. ![]() https://www.allmetalshaping.com/show...t=18980&page=3
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Jaroslav |
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The cat says to do the lower half first, its a compound shape and when its right you can transfer the trunk opening onto it and tip the return, when you do it'll take the shape out but you can shrink it right back to where you started from.
When you tip the return first that 90* deg locks the rest of the sheet in place, you are getting frustrated because the sheet isn't responding due to that 90* bend.
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oj higgins |
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