I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure job?

Thanks

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .

--
Snag

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)

wrote:
On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061
aluminum which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at
the inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)

I thought that was a no-no when welding aluminum and that filler was
required . Something about the weld area being subject to cracking .
--
Snag

On Wed, 23 Jul 2014 22:45:56 -0500, "Terry Coombs"
wrote:

wrote:
On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061
aluminum which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at
the inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)

I thought that was a no-no when welding aluminum and that filler was
required . Something about the weld area being subject to cracking .
I guess it depends on the alloy, the fit, and the application - but
what would cause it to crack more from autogenous welding than from
filling a "V" with filler? Particularly if the filler is identical to
the base metal - which you want it to be if the weld is to totally
blend in. We have often used strips of the metal being welded as
filler where required You can't find the welds in the cowling for my
plane (utility grade aluminum flashing material)

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric

On Thursday, July 24, 2014 10:34:48 AM UTC-7, wrote:
On Wed, 23 Jul 2014 21:40:07 -0400, wrote:



On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"

wrote:



Meanie wrote:

I plan to have someone weld 4 sections of a layout using 6061 aluminum

which you can see

here.....https://www.flickr.com/photos/18223943@N06/14542109948/



This corner/section

https://www.flickr.com/photos/182239...n/photostream/

where the two pieces meet at the side, the corners touch. I cut the

other two corners for a flush cut.....

https://www.flickr.com/photos/182239...n/photostream/



Should I cut one side piece to make flush with the other for better

welding or will a good welder be able to fill that in for a secure

job?

Thanks



The first pair , you need to widen the vee a little , give the welder

somewhere to put some filler . The other pair should also touch at the

inside corner , and have about a 60� vee .

If tigging a "V" is not necessarilly required - Autogenous welding

doesn't even need filler (or much filler)

While autogenous welding works well with steel it does not work well

with 6061 aluminum. What happens is that the aluminum tends to hot

crack. This is why a filler metal is needed, the filler is a different

alloy and when mixed with the base metal forms an alloy that is not

sensitive to hot cracking.

Eric

Winner, winner. Chicken dinner.

On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..
Welding 6061 structural parts is always second or third choice for me
- much rather use rivetted or bolted construction than welded where
strength is required.
I didn't look -was 6061 speced in the OP's post? If so, my bad.

On Thursday, July 24, 2014 1:16:40 PM UTC-7, Clare wrote:
On Thu, 24 Jul 2014 10:34:48 -0700, wrote:



On Wed, 23 Jul 2014 21:40:07 -0400, wrote:



On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"

wrote:



Meanie wrote:

I plan to have someone weld 4 sections of a layout using 6061 aluminum

which you can see

here.....https://www.flickr.com/photos/18223943@N06/14542109948/



This corner/section

https://www.flickr.com/photos/182239...n/photostream/

where the two pieces meet at the side, the corners touch. I cut the

other two corners for a flush cut.....

https://www.flickr.com/photos/182239...n/photostream/



Should I cut one side piece to make flush with the other for better

welding or will a good welder be able to fill that in for a secure

job?

Thanks



The first pair , you need to widen the vee a little , give the welder

somewhere to put some filler . The other pair should also touch at the

inside corner , and have about a 60� vee .

If tigging a "V" is not necessarilly required - Autogenous welding

doesn't even need filler (or much filler)

While autogenous welding works well with steel it does not work well

with 6061 aluminum. What happens is that the aluminum tends to hot

crack. This is why a filler metal is needed, the filler is a different

alloy and when mixed with the base metal forms an alloy that is not

sensitive to hot cracking.

Eric

But remember, not all aluminum is 6061, and not all 6061 is T6. And

not all aluminum is welded with a filler that is different in

composition from the base metal..

Welding 6061 structural parts is always second or third choice for me

- much rather use rivetted or bolted construction than welded where

strength is required.

I didn't look -was 6061 speced in the OP's post? If so, my bad.

You're a ****ing idiot, Clare.

On Thu, 24 Jul 2014 16:16:40 -0400, wrote:

On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..

Other than pure aluminum, none of the common aluminum alloys are
normally welded with filler of the same composition as the base metal.

--
Ned Simmons

On Thu, 24 Jul 2014 19:42:57 -0400, Ned Simmons
wrote:

On Thu, 24 Jul 2014 16:16:40 -0400, wrote:

On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..

Other than pure aluminum, none of the common aluminum alloys are
normally welded with filler of the same composition as the base metal.
When building aluminum coachwork it is not unusual to use strips of
the body metal as filler. It is the only way to make a weld that can
be metal-finished and have the weld totally dissappear.

On Thu, 24 Jul 2014 23:13:17 -0400, wrote:

On Thu, 24 Jul 2014 19:42:57 -0400, Ned Simmons
wrote:

On Thu, 24 Jul 2014 16:16:40 -0400, wrote:

On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..

Other than pure aluminum, none of the common aluminum alloys are
normally welded with filler of the same composition as the base metal.
When building aluminum coachwork it is not unusual to use strips of
the body metal as filler. It is the only way to make a weld that can
be metal-finished and have the weld totally dissappear.

That wouldn't surprise me if the sheet is 1100 or 3003 aluminum. 1100
is considered pure aluminum, and 3003 is around 98%. Both are easily
welded and cold worked.

--
Ned Simmons

On Thu, 24 Jul 2014 16:16:40 -0400, wrote:

On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..
Welding 6061 structural parts is always second or third choice for me
- much rather use rivetted or bolted construction than welded where
strength is required.
I didn't look -was 6061 speced in the OP's post? If so, my bad.
The OP did say it was 6061, which is why I used that alloy in my post.
And the temper doesn't matter as far as hot cracking is concerned.
Eric

wrote in message
...
On Thu, 24 Jul 2014 10:34:48 -0700, wrote:

On Wed, 23 Jul 2014 21:40:07 -0400, wrote:

On Wed, 23 Jul 2014 20:18:48 -0500, "Terry Coombs"
wrote:

Meanie wrote:
I plan to have someone weld 4 sections of a layout using 6061 aluminum
which you can see
here.....https://www.flickr.com/photos/18223943@N06/14542109948/

This corner/section
https://www.flickr.com/photos/182239...n/photostream/
where the two pieces meet at the side, the corners touch. I cut the
other two corners for a flush cut.....
https://www.flickr.com/photos/182239...n/photostream/

Should I cut one side piece to make flush with the other for better
welding or will a good welder be able to fill that in for a secure
job?
Thanks

The first pair , you need to widen the vee a little , give the welder
somewhere to put some filler . The other pair should also touch at the
inside corner , and have about a 60° vee .
If tigging a "V" is not necessarilly required - Autogenous welding
doesn't even need filler (or much filler)
While autogenous welding works well with steel it does not work well
with 6061 aluminum. What happens is that the aluminum tends to hot
crack. This is why a filler metal is needed, the filler is a different
alloy and when mixed with the base metal forms an alloy that is not
sensitive to hot cracking.
Eric
But remember, not all aluminum is 6061, and not all 6061 is T6. And
not all aluminum is welded with a filler that is different in
composition from the base metal..
Welding 6061 structural parts is always second or third choice for me
- much rather use rivetted or bolted construction than welded where
strength is required.
I didn't look -was 6061 speced in the OP's post? If so, my bad.

It was 6061 which is normally welded with 4043. 6061 and 5052 are the two
alloys I am most familiar with welding. You normally weld 6061 with 4043
filler, and 5052 with 5356. I also work a little bit with 7075 which is not
easily weldable, although if there is a way I bet Ernie knows it.

.... when I have "View"/"Threads"/"Threads with unread" set and all
replies have been read?

So, this is a trial: maybe when I read this last reply, T-bird will stop
showing the thread.

Back to our regularly scheduled programming.

Bob