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Old 01-03-2010, 02:41 PM
slantback37 slantback37 is offline
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Default taking out the bend??

Hi. I am making the rear floor sections for a 37 Ford Tudor. Iam pounding in the beads on 16 gauge sheet metal. I made one section already.. My question is How do I take the bends out?? I don't want to do something wrong, and wreck the panel.. Thanks..
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Old 01-03-2010, 03:21 PM
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Pictures would help us understand what you are trying to do. Can you give us a little more information on how you are putting the beads in. Pounding in the beads doesn't tell me much.
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Old 01-03-2010, 03:45 PM
slantback37 slantback37 is offline
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Sorry.. i am using a cold chissel that i rounded over the edge. I have a template that I used a router on over 3/4" plywood. I pounded out the first panel, and just started the second. I am using a 3lb sledge hammer. I pounded in about 1/2".





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Old 01-03-2010, 04:27 PM
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Al, thanks for the pictures that helps.

What is happening is that you are not getting an ever movement of the metal when you are putting the bead in. If you clamp a piece of wood or metal on either side of the bead you will cause the metal to stretch into the pocket that you cut with the router. This will help reduce the bow in the panel. You are getting metal movement from two area now. You are stretching some of the metal into the panel and you are pulling some of the metal from the edges of the bead. This is causing the distortion.

This same thing happens with a bead roller or pullmax unless you pre stretch the metal.

Try turning you panel over on a flat surface, raised bead up. If you have a slapper you can hit the panel between the raised beads and that will tend to flatten the sheet out. If you don't have a slapper get a piece of hard wood if you have it and place if in between the beads and hit the wood as you move it along the edge of the bead. This will help straiten out the panel.

As you make the new panel you might want to straighten the panel after each bead is put in.

Hope this help you a little.
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Old 01-03-2010, 04:32 PM
slantback37 slantback37 is offline
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Thanks.. Makes sense.. Al
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Old 01-03-2010, 05:25 PM
Einar_S Einar_S is offline
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I tried the same a couple of days ago and found that one way to do it is to run the bead straight across the sheet. Then use O/A to heat the bead where it is supposed to be flat and hammer it down back to flat. Do some test pieces first to figure out how to do it. It's not fast, but it works.

What I learnt is to prestretch where the beads go in, but how much? Well I found that difficult to determine.
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Old 01-03-2010, 06:10 PM
slantback37 slantback37 is offline
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I think I will do it the way I am doing it now as far as making the beads. I have oak, and maple strips, so I can clamp them down on either side of the area i need to bend. I will also give it a try by turning over the panel I have already done and see if I can flaten that area out. Besides. I don't have a torch to preheat the metal.. Al
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Old 01-03-2010, 08:10 PM
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I did a test piece like that.It also warped.

To to fix it I used a block of wood and hammered on the wood all around the beads .After that it straitened right back up.

quill holder 226.jpg
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Old 01-03-2010, 09:36 PM
slantback37 slantback37 is offline
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Johnny. Would that pounding on the wood. Would that be on the reverse side?? Al
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Old 01-03-2010, 09:58 PM
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All what I noticed when I un-clamped my piece was the metal was distorted all around the bead.

So what I did was flipped the piece over to where the beads were pointing upward.Then stretched the metal all around the bead until it was flat.

Did you see my post on the floor board patch?

Another thing I see is I am not sure if I would use a chisel.I shaped the end of a piece of oak.
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