Welded Keggle Conversion Advice Sought

[atimmerman88]

Hey All -

I'm not finding a whole lot of welded keggle DIY's out there.

I've got my keg ready to cut tomorrow [hopefully] and I've got some questions.

-Is there some sort of coating/liner on the interior of the keg that I am going to damage or have issues with after using a plasma cutter to cut the top and welding on fittings?

-Is there any corrosive issues using a copper dip tube with AL fittings

Thanks in advance!

-AT

 

[Stealthcruiser]

No liner / coating on the inside, but if ya' do it with a plasma cutter, there is a CHANCE, that you will wind up with little pits in the interior of the keg, from the spray of the plasma cutter.
Not to mention the "not real round" opening, and a more ragged edge to clean up than if you cut it out with a "zizz" wheel and a fixture to make your cut circular.

Points to ponder.........

 

[Stealthcruiser]

Look through this thread, I posted a link at the end to the fixture I made to do the cut.

https://www.homebrewtalk.com/f51/angle-grinder-cut-off-410884/

 

[atimmerman88]

I've got an aluminum fixture already made for the plasma so I'm not worried about roundness from it, edge quality might not be the best though

 

[kmcace]

Put water in the bottom of the keg before cutting. This will help with any slag you may get from the plasma.

Why are you using aluminum fittings?

 

[atimmerman88]

I'll turn out some on the lathe. Just going to make something with a shoulder on the outside for welding and 3/4" NPT for my valve and the internal threads will be what ever matches the fittings for my copper dip tube, most likely 1/2" NPT.

 

[Stealthcruiser]

"Probably start from 6061 1.5" round stock or so"[/QUOTE]


I must have missed it, that you're using aluminum kegs!

 

[atimmerman88]

Well I stand corrected. I was pretty positive it was an AL keg.

I guess after further research almost all modern kegs are SS

Looks like I'll be make SS parts instead of AL parts