On 2009-01-23, Ignoramus31576 wrote:
I would try to use a copper backing plate and a big soldering gun.

And I would turn the box so that the backing plate is horizontal,
below the lead.

i

i

On 2009-01-23, RoyJ wrote:
I would expect that the epoxies are much stiffer than the lead. The lead
will bend slightly with handling, you will break the epoxy bonds.

John Asop wrote:
Actually, I was hoping to maybe epoxy the pieces together if it is possible.
What this is is part of a lead container made up of 1/4" lead. Someone
decided at one point to cut out a square slice out of one of the sides. I
still have the piece that was cut out and it is only small and doesn't weigh
much. With this cut out of the side, the container is pretty much useless
and I first thought about welding it back in. I didn't want to use solder
as the container is 100% pure lead and I want to keep it hat way. I don't
feel good about heating it for fear of melting away the area where I want to
weld in the cut piece.

Unfortunately, the lead is in a state of decay (MUCH oxidation all over the
box), so I have been trying to handle it as little as possible and plan to
place it inside 2-3 mil plastic bags once I have the piece back in place. I
will still be able to use the box in the bags.

I have used 2 part store bought epoxies on other types of metals with pretty
good success in the past and wondered, if I lapped over the joints and
applied epoxy between them, would the mend hold? If epoxies can work, which
would be the best?

Thanks in advance and thanks for the initial reply.

John

wrote in message
...
On Jan 23, 9:20 am, "John Asop" wrote:
What's the best way to weld together two 1/4" lead sheets? I was going
to
try and use a blowtorch, but I'm worried about compromising the lead
thickness of the seams, so I thought I would pose the question.

Thanks in advance,
John
A blowtorch is just fine, preferably propane etc as the old pump up
kerosine ones are dirty *******s. Use bar solder, use Stearine as a
flux. Use a wiping pad made from an old felt hat (traditionally,
rabbit fur) or failing that, a piece of motorcycle inner tube bent
into a pad. Bevel the edges on the top sheet, wire brushing is
adequate surface preparation.

You should be able to get bar solder and a block of Stearine from your
local plumbing supply shop.

Andrew VK3BFA.




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