Kevin Hester said in Re: DFLY: Re Basic metal working knowledge at
17/May/1998 17:08:56.
> brian whatcott wrote:
>
> > At 05:55 5/17/98 +0000, you wrote:
> > >
> >
> > >My procedure has been to clamp the piece between the bending blocks on a
> > >vice. Then smack at the aluminum with a ball pein hammer. After
> > >looking at the piece it is now apparent that this is not correct....
> > >Kevin
> > >
> >
> > You are just one step away from the bends you want.
> > To be gentle with this soft material, you need to pat it with a
> > soft-face mallet.
> > There are several options:
> > on the traditional side, a wooden or leather face mallet
> > on the modern side, a platic face mallet (with those yellow
> > plastic end buttons)
> > or a dead-blow plastic faced hammer.
> >
> > Brian Whatcott Altus OK
> >
>
> Thanks for the tips!
>
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> Hi Kevin
If you want to make a straight bend in aluminum... it is best to use a
brake. If you are using 2024-T3 (or the other common alloys) you can find
guidelines for minimum bend
radius in AC 43.13-1a also a tutorial on forming aluminum is there.
Forming aluminum is different than bending. If you use 2024-0 material you
can use a form block and mallets mentioned above to make the aluminum go
into just about any shape you want. But, O material is not suitable for
any structural purpose, it must be heat treated. 2024-T3 can also be
formed into many shapes but it is more difficult requiring much more
patience, but you don't need to heat treat it afterwards. If you can't beg
borrow or steal a brake in your area, you can buy a cheap bench mounted
brake at several of the aircraft tool suppliers including I think ATS has
'em see http://www.aircraft-tool.com/cgi-win/ats.exe no I don't work for
them.
Carlos
Project in TX me in GA
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