TIG on tubing

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When doing a socket weld on stainless with TIG I am trying to prevent full penetration into the ID of the tube. The tube wall thickness is .065 and the socket wall thickness is 1/8".Have tried angling the tungsten at a lower angle so it is more tangent than vertical like what is typically done but still had full penetration. I am purging the tube with argon with about 5 inches water column pressure.Any help would be appreciated.
Reply:Try sharpening the tungsten with a blunter tip.Don’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:I will try that. Thanks.
Reply:Originally Posted by CEPTry sharpening the tungsten with a blunter tip.
Reply:Yeah, that's a tough one. I guess I would pull out the reading glasses, .035 wire, and minimize the weld. Are you blowing holes in the tube?  Suckback?Weld like a "WELDOR", not a wel-"DERR" MillerDynasty700DX,Dynasty350DX4ea,Dynasty200DX,Li  ncolnSW200-2ea.,MillerMatic350P,MillerMatic200w/spoolgun,MKCobraMig260,Lincoln SP-170T,PlasmaCam/Hypertherm1250,HFProTig2ea,MigMax1ea.
Reply:Originally Posted by OscarActually, the opposite would help---grinding the tungsten with the shallowest vertex angle (which necessarily implies the longest taper) is what will reduce penetration at the expense of widening the weld pool.http://weldingweb.com/vbb/showthread.php?t=241111
Reply:Originally Posted by OscarActually, the opposite would help---grinding the tungsten with the shallowest vertex angle (which necessarily implies the longest taper) is what will reduce penetration at the expense of widening the weld pool.http://weldingweb.com/vbb/showthread.php?t=241111
Reply:Shovelon,  I'm getting penetration on tube ID not holes per se'.  Just a puddle witness like doing an autogenous bead. It's acceptable but would rather avoid it. I need to do some samples to find the cure.   I'll post what I learn. My employer is sending 3 of us to Lincoln in Cleveland for a week on some specialty tig training and will surely ask them too.
Reply:weld faster
Reply:Can you fit a copper heat sink into the tube?