Removing flux?

[Michael Horowitz]

I'm doing some brazing and would like to remove the solid cake of
flux that forms around the braze.
How do I remove that flux?
Mechanical or is there a chemical? - Mike

[GeorgeB]

On Sun, 18 Jul 2010 08:20:32 -0400, Michael Horowitz
> wrote:

>I'm doing some brazing and would like to remove the solid cake of
>flux that forms around the braze.
>How do I remove that flux?
>Mechanical or is there a chemical? - Mike

In my experience, most brazing flux used with steel may be removed
with water. In the days when I did some, an old toothbrush and warm
water did the trip.

What flux are you using? The manufacturer (well, name on the jar)
probably has cleanup procedures.

[Michael Horowitz]

I see where it says to quence in hot water; I"ll give it a try - MIke



On Sun, 18 Jul 2010 09:33:00 -0400, GeorgeB > wrote:

>On Sun, 18 Jul 2010 08:20:32 -0400, Michael Horowitz
> wrote:
>
>>I'm doing some brazing and would like to remove the solid cake of
>>flux that forms around the braze.
>>How do I remove that flux?
>>Mechanical or is there a chemical? - Mike
>
>In my experience, most brazing flux used with steel may be removed
>with water. In the days when I did some, an old toothbrush and warm
>water did the trip.
>
>What flux are you using? The manufacturer (well, name on the jar)
>probably has cleanup procedures.

[Morgans[_2_]]

"Michael Horowitz" > wrote

> I see where it says to quence in hot water; I"ll give it a try - MIke

Quenching is how it is to be rapidly cooled. Look again to see if there is
anything about cleanup and inspection after the weld.
--
Jim in NC

[jim wynhoff]

On Jul 18, 6:51*pm, "Morgans" > wrote:
> "Michael Horowitz" > wrote
>
> > I see where it says to quence in hot water; I"ll give it a try - MIke
>
> Quenching is how it is to be rapidly cooled. *Look again to see if there is
> anything about cleanup and inspection after the weld.
> --
> Jim in NC

I'll be following this thread. In 40 years of welding and brazing,
I've never found a GOOD way to remove the glass-like residue from
brazing flux. At one place I worked, they used bare (unfluxed) rod,
and had a flux pot between the Acetylene tank and the torch.
Interesting green flame, great fluxing action, and almost zero
residue.

[[email protected]]

I'm working on the fuel system for my homebuilt and I need 1.5 psi or
less fuel pressure.
I'm thinking "remote float bowl" gravity feeding the ex Harley carb,
and either a rear floatbowl from a single-pumper Holley 4bbl
(preferably center float) or the floatbowl from an SU HS8.

Anyone on the list in east central Canada (sw ontario) have either
floating around (no pun intended)

[Brian Whatcott]

On 7/20/2010 8:49 PM, wrote:
>
> I'm working on the fuel system for my homebuilt and I need 1.5 psi or
> less fuel pressure.
> I'm thinking "remote float bowl" gravity feeding the ex Harley carb,
> and either a rear floatbowl from a single-pumper Holley 4bbl
> (preferably center float) or the floatbowl from an SU HS8.
>
> Anyone on the list in east central Canada (sw ontario) have either
> floating around (no pun intended)

Buy an adjustable fuel pressure regulator
which you fit UP CLOSE to the point of use.

Brian W