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Old 06-16-2010, 06:15 PM   #1
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Aluminum F-shaped extrusion

hello,

I bought some new Aluminum F-shaped extrusion, what is the best way to bend / bow them to the originals radius?
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Old 06-16-2010, 08:51 PM   #2
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hate no answer threads

I do not know what you are talking about. "What we have heah, is a failure to camunnnnicate!" This is not your problem, entirely, because the folks on this forum are, in many cases clairvoyent. However, I am gonna try stirrin' the pot: is this aluminum stock A/S stuff? Is it the stuff that is at the bottom/tops of windows to guide the curtains? Or is this some off-the wall 1 inch thick T6061 extrusion that will crack at the mere mention of deflection? Some photos and an idea of what it is you are doing will help. There are many folks on here that know aluminum better'n most know themselves. So, give us some morsels of info and let the forum work.

By the way, there is no animosity intended in my reply, just trying to get the collective forum's juices flowing....
ol' bill (aluminum ignoranant until proven brilliant)
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Old 06-16-2010, 08:56 PM   #3
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If this is the stuff you have, it should be pretty straight forward to bend.
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Old 06-16-2010, 09:10 PM   #4
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Quote:
Originally Posted by bobfowler View Post
If this is the stuff you have, it should be pretty straight forward to bend.
If this is what you are talking about Steve, unfortunately we found it's not so straight forward or easy to bend. The direction it needs to bend is into the groove...I would have loved to have known how to bend it too. We tried on a piece we got from a friend and found it impossible to bend w/o creasing, even with the DIY tools we have around the garage. We even have a shrinker/stretcher and it was of no help.

BTW, we actually have been pretty resourceful during the restoration of our '56 and tackled many more projects that the "average" DIY'rs have...but couldn't figure this one out.

So what's the trick Bob? Inquiring minds want to know...

Shari
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Old 06-16-2010, 10:23 PM   #5
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correct, these are the F-shaped extrusion that holds 1/4 partition wall panles. they are bowed to the ceiling radus.

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Old 06-16-2010, 10:33 PM   #6
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The piece I bent was a rather gentle radius. I used the partition as a bending form. I haven't tried and radical bends (that WOULD be a pain), but wall radius curves aren't too bad.
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Old 06-16-2010, 10:37 PM   #7
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Nothing radical here...just tried to match the curves of our trailer for a wall panel. We tried bending it around the panel and it just sprung back straight. Hmmm...

Shari
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Old 06-16-2010, 11:29 PM   #8
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I've bent it in the past by cutting shallow notches in the back of it about every 1/8 of an inch and about half deep as the material. I cut the notch with a metal cut offf blade on my miter saw. You have to be careful with the bends but once its riveted to the wall, you are good to go.
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Old 06-17-2010, 01:09 AM   #9
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Note that the temper of the alloy makes all the difference in the world when it comes to bending. If the alloy is heat-treated and you need to form a tight bend, heating it with a propane torch to remove the temper will make it much simpler to bend. This is particularly true for alloys/heat treats such as 6061-T6; after heating it is much less strong, but much easier to bend.

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Old 06-17-2010, 12:15 PM   #10
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thank you all,
these are 6063 t5 that are softer but heat treated. does anyone knows what was the original material? I still have all my old extrusions, I can clean & use them if these new are hard to work with.
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Old 06-17-2010, 12:41 PM   #11
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I think the higher the "T" number the harder it is. I would actually call around and see about finding a metal shop that can put it through a roller to put the curve in it. Might be as cheap as a handshake to get it done. Cash always greases the wheels in a metal shop.
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