Quote Originally Posted by Robert s View Post
I have used this and no just smacking it will not remove it. It is some tough stuff but works well. Kind of reminds me of the flux on a stainless rod for stick welding, but all ground up.

RESIDUE

The thin glass-like residue is chemically inert after welding and adheres tenaciously to the base metal. While this residue is unattractive to the eye, it does not affect the quality of the weld and usually need not be removed. However, if removal is desired, it is easily accomplished with a stainless steel wheel, stainless steel brush or common pickling compounds. Our research indicates that 'Wonder Gel', manufactured by Bradford DeRustIt Company is excellent.

(Note: there are some pipe or tube welding applications where absolute purity and a polished inside surface are required. These include food or beverage lines where subsequent product refining will not take place, medical oxygen lines, computer chip manufacturing air lines, and high service temperature (above 1000°F) steam lines. In these situations we recommend purging instead of SOLAR FLUX so as to avoid a difficult chemical cleaning process.)

I was reading a thread where a guy recommends using Solar Flux B for turbo manifolds. He says that he just smacks the pipes on the ground and most of it comes out. Then what doesn't come out he just runs through the turbo. He also said his stuff goes to SEMA for the show.

I find it hard to believe pipes he smacks on the ground go to SEMA. I also would not any "glass" type material going through my turbo.