cleaning heavy brass corrosion prior to hard solder job

[rudd]

I do a little repair work here and there, a lady brought me an antique brass stool with a broken leg. Leg appears to be cast brass from the fracture pattern. It has some pretty heavy corrosion. First thought was a soda blaster set-up, which is 100 clams even at Horror Freight. I hate to buy this for a one off job - I can't really see charging more than 75 bux for the job anyway.
I also read about using 2 part hydrogen peroxide to 1 part white vinegar for knocking off red corrosion.



Any thoughts on the H2O2/vinegar or another solution to clean this up for a silver solder job?

thanks
Rudd

[ken572]

I do a little repair work here and there, a lady brought me an antique brass stool with a broken leg. Leg appears to be cast brass from the fracture pattern. It has some pretty heavy corrosion. First thought was a soda blaster set-up, which is 100 clams even at Horror Freight. I hate to buy this for a one off job - I can't really see charging more than 75 bux for the job anyway.
I also read about using 2 part hydrogen peroxide to 1 part white vinegar for knocking off red corrosion.

Any thoughts on the H2O2/vinegar or another solution to clean this up for a silver solder job?

thanks
Rudd

Rudd,

HF Central Pneumatic - item#93221 SALE $15.99

http://www.harborfreight.com/gravity-fe ... 93221.html

If it was me I would soda blast with the above, and use a short brass
lamp tube from Home Depot, and or Lowes, in there lamp parts
Department. Press it in the leg aprox 1/2" on each side of the leg break
and braze it.

(My 2.5 Cents Worth)
Ken.

[rudd]

Laff! I missed that one! Just when you think things can't get any cheaper!

You mention brazing, I thought about that, but since the part probably melts about the same temp as the filler rod, I am afraid of destroying the part. Is this fear unfounded?

On closer examination, I found the legs screw into the seat, so there's a short little stub of thread I need to pull from the seat, much easier to set up.

I'd like to put a reinforcement in there, it will have to be turned brass. I've got plenty of scrap to turn. The hole doesn't really lend itself to this, but it can't hurt.

thanks for doing my shopping for me.


Rudd

[ken572]

Laff! I missed that one! Just when you think things can't get any cheaper!

You can't beat that, sitting on the shelf for those small jobs at
that price.

You mention brazing, I thought about that, but since the part
probably melts about the same temp as the filler rod,
I am afraid of destroying the part.
Is this fear unfounded?

A little fear is normal when doing something we have
not done before.
If you have Oxy/Acet Torch setup or Oxy/Mapp Torch setup,
I think I would try a #2 tip or a #3 tip.

If you have a Arc Welder I think I would use some 1/16 or 3/32 rod.

On closer examination, I found the legs screw into the seat, so there's a short
little stub of thread I need to pull from the seat, much easier to set up.

I'd like to put a reinforcement in there, it will have to be turned brass. I've got
plenty of scrap to turn. The hole doesn't really lend itself to this, but it can't hurt.

As long as you have the brass scrap there, make your self some practice
piece's, with about the same shape and metal mass to practice on first.
This will help you with your settings etc, and make the fear go away before you do
the actual piece's.

EDIT on 9-17-2012
This is a GREAT FREE BOOK which should be helpfull to you.
http://www.brazingbook.com/

thanks for doing my shopping for me.

No problem.
Ken.