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yeah thats crazy....i use a step bit to get to the right size hole....make the two faces of the keg and the coupling just barly touch and i make a back purged fuse pass...and leaving purge on... i do a filler pass...and i would never use a plasma...i use a thin disc and run it round till thru

try to have someone with back purging experiance fix it

it depends....my gas hooks directly into my welder and comes out as soon as the tungsten hits the metal...you dontwant to much backpurge or it will blow thru ur weld....

there ya go...hows the gas enter?

after i tape my purge back on i support it with a locking tape measure to hold the backer firmly in place:rockin:

yeah you need to have tri-mix to weld ss with mig process...the helium in it is what makes the magic happen

you guys are lucky...these are my moneymaking tricks....i charge 35 coupling 25 to cut the lid out...and i polish cause it looks hot

heres my purge set up.....

just fit the edge of the coupling flush to the face of the keg....i make a fuse pass first...with everything back purged...then i do a fill pass to rid of any undercut

yeah thats what u want....u should look up this unit http://www.longevity-inc.com/productdetail_229/Multi-Purpose-Units/WeldAll-200PI.php guy on this honda site says its a good unit

thank you...do some research on the welder..ive seen little machines that do ac dc liftarc stick and a plasma all in one...just dont remember the name right off hand

i back purge then tack weld the very edge to the edge of the keg wall....none of the fitting in the keg..after ur done welding u should be able to run ur finger on the inside

if you make the hole just barly big enough to let the face of the coupling touch the face of the keg wall witch i have filed an polished to remove natural oxidation...then i do a fuse pass at about 40 amps...then i go over that with 1/16 304 fill rod...and i always careful which way i push my...

i can give you some pointers if your interested....id rather see you weld it....but thats cause i LOVE to weld

yeah its an iffy...i mean...it could growbacteria.....it could not....i personally wouldnt take the chance...let alone its a quality issue with me....why screw it up when it could done correctly

Its not flux cored....he just burnt thru real bad and the metal sugared :rockin:

DONT EVER WELD ON SS WITH MILD STEEL FILL ROD. UNLESS YOU WT TO RUIN YOUR KEG...YOUR WELD WILL RUST...DONT BE A CHEAP AS GO TO THE WELD STORE AND BUY YOURSELF SOME 308L FILL ROD:rockin:

i modify kegs....i charge 35 per coupling....remember if their not back purging those welds their being done wrong