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> Sheet metal help - Need angled flange tool?
3d914
post Nov 6 2016, 12:26 PM
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Working on the support frame for my trunk lid so it opens from the back instead of the front. I'm planning on using 14ga steel, but may need to go to 16ga if I can't find a tool for this. Preferably I'd like an angled, not flat, flange. Most the hand or pneumatic tools out there only do a flat flange for like an overlap weld joint. Anyone seen or used a hand (pneumatic) tool with something other than a flat flange?

Here's the drawing for the support frame (in orange). They'll plasma cut the pieces for me, so I need to find a method to flange these cutouts that lighten the piece, to add the strength back in.

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If I can't find a hand tool for this, I'll need to go with a press and some hole flange tools - but those I can add without having these shapes pre-cut.

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McMark
post Nov 6 2016, 01:54 PM
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A bead roller might be able to do what you need, but the 'right way' would involve milling special die sets to curve those edges. Super cool, but way too much work for a single use.

You'd have to be really good with a really nice bead roller to flare that.

For what you're trying to do, you might look at making wooden bucks and hand hammering the pieces. You could cut the radius into the buck with a router. And you'd probably want a cover/plate/buck to hold most of the material flat and stable while hammering.

Here's a crude version of what I'm talking about.


https://www.youtube.com/watch?v=1ADjYv8WjgI
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3d914
post Nov 6 2016, 05:59 PM
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QUOTE(McMark @ Nov 6 2016, 12:54 PM) *

A bead roller might be able to do what you need, but the 'right way' would involve milling special die sets to curve those edges. Super cool, but way too much work for a single use.

You'd have to be really good with a really nice bead roller to flare that.

For what you're trying to do, you might look at making wooden bucks and hand hammering the pieces. You could cut the radius into the buck with a router. And you'd probably want a cover/plate/buck to hold most of the material flat and stable while hammering.

Here's a crude version of what I'm talking about.



Mark, I considered that, but the cost of one for just for these two pieces isn't practical. Also, I think a bead roller would have difficulty with these smaller radius corners. I know I didn't put any dimensions on, but it's only about 14 inches across the length.

You're suggestion about the wood buck might be a way to go, but again I think the compound small radius' will be a challenge. I'll also have to get some small headed shaping hammers to fit in those radii.

With all the pneumatic flange tools out there, you think there'd be one that has an angle flange instead of a flat.
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Posts in this topic
3d914   Sheet metal help - Need angled flange tool?   Nov 6 2016, 12:26 PM
McMark   A bead roller might be able to do what you need, b...   Nov 6 2016, 01:54 PM
3d914   A bead roller might be able to do what you need, ...   Nov 6 2016, 05:59 PM
McMark   With all the pneumatic flange tools out there, yo...   Nov 7 2016, 11:39 AM
914forme   With all the pneumatic flange tools out there, y...   Nov 7 2016, 01:28 PM
dlee6204   So what are the internal cutouts for? Weight savi...   Nov 6 2016, 06:12 PM
3d914   So what are the internal cutouts for? Weight sav...   Nov 14 2016, 07:03 PM
914forme   Hammer forming them is the best way to do them as ...   Nov 6 2016, 07:00 PM
914_teener   Hammer forming them is the best way to do them as...   Nov 7 2016, 11:01 AM
mbseto   :agree: Hammer form using McMark's wooden bu...   Nov 7 2016, 10:45 AM
Valy   Not sure how much reinforcing you need but this ma...   Nov 7 2016, 11:13 AM
rick 918-S   I think I used Plywood as a buck for this panel. I...   Nov 7 2016, 03:51 PM
3d914   I think I used Plywood as a buck for this panel. ...   Nov 14 2016, 07:07 PM
rick 918-S   I think I used Plywood as a buck for this panel....   Nov 15 2016, 07:26 AM
914_teener   Rick....nice work. Never forget you and Mark work...   Nov 7 2016, 04:21 PM
tygaboy   If you're not stuck on those cut out shapes, y...   Nov 14 2016, 07:13 PM
3d914   If you're not stuck on those cut out shapes, ...   Nov 16 2016, 07:51 AM
mbseto   This is a mini-clinic.   Nov 15 2016, 10:25 AM
3d914   Rick, your example makes sense, and thanks for sha...   Nov 16 2016, 08:06 AM
3d914   Here's what I came up with. Found a 1.5" ...   Dec 4 2016, 10:10 AM
Catorse   Looks great and will be plenty strong. Where did y...   Dec 4 2016, 12:06 PM


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