Deflux/Derust before Reflux?

[ToddFarr]

Thanks everybody, It was a great read through and thank you for offering up the information. Do you guys use a flap wheel to mechanically clean the inside of the tubes or?

[e-RICHIE]

Thanks everybody, It was a great read through and thank you for offering up the information. Do you guys use a flap wheel to mechanically clean the inside of the tubes or?

I have never touched the inside of my tubes except to de-burr them after the cuts are made atmo. They are, however, liberally fluxed.

[dbohemian]

Thanks everybody, It was a great read through and thank you for offering up the information. Do you guys use a flap wheel to mechanically clean the inside of the tubes or?

Yes, I de-grease the entire tube and mechanically clean the first half inch or so. Even though fluxes can sometimes eat through the heavy oxide there why put them through that? I want to give every opportunity to build a small internal fillet if possible and prevent contamination. It takes about 2 minutes per tube. Flap it my man.

[Eric Estlund]

I abrade the surface at the ends of all the tubes where I want filler to go, inside and out.

Flap wheel? Sounds like and extra SKU to inventory and $ to spend.

[Eric Estlund]

PS- I loved that little drill, but when it decided to ground through my arms/ chest and the pedestal I decided to let it go.

[edoz]

I abrade the surface at the ends of all the tubes where I want filler to go, inside and out.

Flap wheel? Sounds like and extra SKU to inventory and $ to spend.

I do the same thing with a Dremel and a piece of 1/8" tig rod to tape the 80 grit to.

[afwalker]

That is every bit as good as a flex hone
andy walker