75106Re: [metalshapers] I need some suggestions.
- Nov 20 4:47 PMI probably weld more thin copper than anybody else in the box. I like TIG welding with pulse. I expect to play with various pulse parameters soon, in a semi formal experiment. But I don't weld thinner than 32 oz copper. After i get the pulse experiment done, I will probably try to weld 16 oz copperR
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On Nov 20, 2013, at 2:29 PM, "Varnell, John" <jvarnell@...> wrote:
The way I TIG welded copper took a lot of trial and error but this is what I did. I but wielded it. I put a piece of stainless behind it and used some copper wire (0000 THHN strands). I cleaned all edges and the wire with citric acid (lemon juice) I did it on AC. There maybe people that really know how to do it but that is what I did.
John D. Varnell
Is there such a thing as making this in 2 parts ? front and sides.......you could water jet cut the front....then make the sides to match and bolt the sides to the front...water jet cut the front with enough extra to roll over the parton 3 sides.........same for the cides then bolt -screw the sides to the front....frame would pe zink plated...powder coatet first ....
In a message dated 11/18/2013 8:07:57 A.M. Central Standard Time, adveniam@... writes:
On 11/17/2013 8:03 PM, bl55303@... wrote:
> Do you know how to tig weld copper.........sounds like you could
> fab the part and weld it together.
> How many do we need? Could water jet cut the big sides and
> use a tiping wheel to turn the sides.If you can have a 1/4
> flange tiped side you could make a hamerform and do the
> comlpleat letter. Then soder the sides to your letter....A picture
> of what you are trying ti reproduce would be helpful...... Barry L
My initial impulse IS to fab it up. This is tedious , but practical
This curve is just a bit above eye level in a formal greenhouse attached
to a 1920 mansion. Everything done on the place so far is with an eye to
maintaining the visual integrity of the building. The old piece was a
one piece item. The owner knows this. If possible I'd like to follow suite.
The dimensions are still up in the air.
The old one is about 3 inches wide and 2 high.
The new skeletal structure is still being drawn up . I need to cover
that so that it will look as if it is original.
I have told them that I can not even come up with a final design until
the structure is in place.
Working from concept right now I can get some technique figured out.
From plans I can refine the technique and get a good idea about
materials. Given the vagaries of construction actual measurements will
wait until I see the finished project. I did tell them that the closer
they are to perfectly square joints and tolerances of 1/16th inch
dimensionally the less it will cost to clad.
There are a few thousand pieces total If I can deal with it as 20-30
types of pieces rather than all "one of" pieces things will be much better.
I know this can be done, as it was on the old one.
After 45 years or so doing this type of thing, this one will raise the
learning curve for me.
The methods and bench tools used originally probably no longer exist, so
there will be some wheels reinvented possibly.
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