Forming finger straps.

[Mike]

A finger strap is a reinforcing piece of metal that is used to
reinforce a joint.

The impression I have is the strap is heated until it can be formed,
then wrapped around both the primary and secondary tubing being joined.
For both tubes the strap is formed around them.

Is the strap tacked in place, then heated until it's plastic, then
hammered/tapped/worked so that it is formed around the pieces, or is it
somehow formed off of the tubing that's being reinforced? - Mike

[Orval Fairbairn]

In article . com>,
"Mike" > wrote:

> A finger strap is a reinforcing piece of metal that is used to
> reinforce a joint.
>
> The impression I have is the strap is heated until it can be formed,
> then wrapped around both the primary and secondary tubing being joined.
> For both tubes the strap is formed around them.
>
> Is the strap tacked in place, then heated until it's plastic, then
> hammered/tapped/worked so that it is formed around the pieces, or is it
> somehow formed off of the tubing that's being reinforced? - Mike

Tack weld, heat, hammer form when red hot, weld in place.

[Mike]

Orval Fairbairn wrote:
> In article . com>,
> "Mike" > wrote:
>
> > A finger strap is a reinforcing piece of metal that is used to
> > reinforce a joint.
> >
> > The impression I have is the strap is heated until it can be formed,
> > then wrapped around both the primary and secondary tubing being joined.
> > For both tubes the strap is formed around them.
> >
> > Is the strap tacked in place, then heated until it's plastic, then
> > hammered/tapped/worked so that it is formed around the pieces, or is it
> > somehow formed off of the tubing that's being reinforced? - Mike
>
> Tack weld, heat, hammer form when red hot, weld in place.

Orval - OK, I"ll try that on some scrap; but every time the hammer
touches the metal, and every place the patch touchs the base metal will
tend to cool down the patch. Is there a secret? Small areas at a time?
- Mike

[cavelamb]

Mike wrote:
> Orval Fairbairn wrote:
>
>>In article . com>,
>> "Mike" > wrote:
>>
>>
>>>A finger strap is a reinforcing piece of metal that is used to
>>>reinforce a joint.
>>>
>>>The impression I have is the strap is heated until it can be formed,
>>>then wrapped around both the primary and secondary tubing being joined.
>>>For both tubes the strap is formed around them.
>>>
>>>Is the strap tacked in place, then heated until it's plastic, then
>>>hammered/tapped/worked so that it is formed around the pieces, or is it
>>>somehow formed off of the tubing that's being reinforced? - Mike
>>
>>Tack weld, heat, hammer form when red hot, weld in place.
>
>
> Orval - OK, I"ll try that on some scrap; but every time the hammer
> touches the metal, and every place the patch touchs the base metal will
> tend to cool down the patch. Is there a secret? Small areas at a time?
> - Mike
>

One could "pre form" the strap to fit cold...

[Michael Horowitz]

On Fri, 14 Apr 2006 17:07:27 GMT, cavelamb >
wrote:

>Mike wrote:
>> Orval Fairbairn wrote:
>>
>>>In article . com>,
>>> "Mike" > wrote:
>>>
>>>
>>>>A finger strap is a reinforcing piece of metal that is used to
>>>>reinforce a joint.
>>>>
>>>>The impression I have is the strap is heated until it can be formed,
>>>>then wrapped around both the primary and secondary tubing being joined.
>>>>For both tubes the strap is formed around them.
>>>>
>>>>Is the strap tacked in place, then heated until it's plastic, then
>>>>hammered/tapped/worked so that it is formed around the pieces, or is it
>>>>somehow formed off of the tubing that's being reinforced? - Mike
>>>
>>>Tack weld, heat, hammer form when red hot, weld in place.
>>
>>
>> Orval - OK, I"ll try that on some scrap; but every time the hammer
>> touches the metal, and every place the patch touchs the base metal will
>> tend to cool down the patch. Is there a secret? Small areas at a time?
>> - Mike
>>
>
>One could "pre form" the strap to fit cold...


Yep - I was thinking of building a mold by building a like joint,
filling it with sand, and heating the strap around that - but I get
wrapped around the axel and was looking for an EZ way - MIke

[cavelamb]

Michael Horowitz wrote:

> On Fri, 14 Apr 2006 17:07:27 GMT, cavelamb >
> wrote:
>
> Yep - I was thinking of building a mold by building a like joint,
> filling it with sand, and heating the strap around that - but I get
> wrapped around the axel and was looking for an EZ way - MIke


Stick TWO pieces of right sized pipe in the vice, with the strap
centered between them.

Vice grip the top of the pipes (needle nose grips here) to keep the
pipes from spreading.

and wrap the strap around one pipe...

Vice grips with soft aluminum footies are "handy" ;)


Richard

[Orval Fairbairn]

In article . com>,
"Mike" > wrote:

> Orval Fairbairn wrote:
> > In article . com>,
> > "Mike" > wrote:
> >
> > > A finger strap is a reinforcing piece of metal that is used to
> > > reinforce a joint.
> > >
> > > The impression I have is the strap is heated until it can be formed,
> > > then wrapped around both the primary and secondary tubing being joined.
> > > For both tubes the strap is formed around them.
> > >
> > > Is the strap tacked in place, then heated until it's plastic, then
> > > hammered/tapped/worked so that it is formed around the pieces, or is it
> > > somehow formed off of the tubing that's being reinforced? - Mike
> >
> > Tack weld, heat, hammer form when red hot, weld in place.
>
> Orval - OK, I"ll try that on some scrap; but every time the hammer
> touches the metal, and every place the patch touchs the base metal will
> tend to cool down the patch. Is there a secret? Small areas at a time?
> - Mike

Get the strap red hot! Reheating the metal doesn't hurt it -- it
relieves stresses from the forming process.

[cavelamb]

Orval Fairbairn wrote:

> In article . com>,
> "Mike" > wrote:
>
>
>>Orval Fairbairn wrote:
>>
>>>In article . com>,
>>> "Mike" > wrote:
>>>
>>>
>>>>A finger strap is a reinforcing piece of metal that is used to
>>>>reinforce a joint.
>>>>
>>>>The impression I have is the strap is heated until it can be formed,
>>>>then wrapped around both the primary and secondary tubing being joined.
>>>>For both tubes the strap is formed around them.
>>>>
>>>>Is the strap tacked in place, then heated until it's plastic, then
>>>>hammered/tapped/worked so that it is formed around the pieces, or is it
>>>>somehow formed off of the tubing that's being reinforced? - Mike
>>>
>>>Tack weld, heat, hammer form when red hot, weld in place.
>>
>>Orval - OK, I"ll try that on some scrap; but every time the hammer
>>touches the metal, and every place the patch touchs the base metal will
>>tend to cool down the patch. Is there a secret? Small areas at a time?
>>- Mike
>
>
> Get the strap red hot! Reheating the metal doesn't hurt it -- it
> relieves stresses from the forming process.


Hold up, Orv.

You can crystallize 4103 by getting it too hot.

Get it DULLLLLLL red...

Richard