Defluxing

[fpavao]

Hello again,

I've used the search button but didn't come up with anything interesting.

How do you guys get flux out after brazing? Any tips on this or is it just old fashioned brushing?

Regards.

[echelon_john]

H20, preferably hot. That's it.

[Mtblucas]

My flux is water soluable. Like the last guy said, warm/hot water and a wire brush helps get the chunky stuff off. I'm sure some flux is still stuck inside the tubes of the frame that I can't get to. Not sure how to remove that, but I can't see how it could hurt anything if it stays there.

[Will Neide]

My flux is water soluable. Like the last guy said, warm/hot water and a wire brush helps get the chunky stuff off. I'm sure some flux is still stuck inside the tubes of the frame that I can't get to. Not sure how to remove that, but I can't see how it could hurt anything if it stays there.

If you have all your vent holes properly drilled, a complete submerge of the frame in hot water should get it out.

[fpavao]

Thanks for the replies. Unfortunately, I don't have hot water in my workshop and heating on a stove or something would be too much time consuming.

For the time being, I'll stick to what I'm doing.

[Bill Bryant]

Hot water works better, but cold water will do the job if you have time. If your shop doesn't have water, find a way to haul in a few gallons and make a soak tank. Brushing/sanding it off is too much work and won't be as good as using water before you start doing the finish work.
Water is your friend.

[igor miyamura]

I use in my workshop one electric water boiler.
where I live it costs the equivalent of $ 5.

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