15-16 guage stainless

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What as to be done to get penetration. I either burn out the chromuim or get no penetration at all. What is the trick to this tricky metal. Or isn't it. I have been using .040 tungsten and 1/16 filler rod. I could use some help from the pros here.
Reply:What process? Mig or Tig? Is it the back side of the part thats burning? What are you making? Is it tubing you're welding or plates?I'm just going to assume it's the backside that's burning. You're going to want to get shielding gas on the back. If it's a tube, fill it with purge gas. If it's plates of some kind you'll either need to make a purge to go behind your weld. Or an easier alternative that may or may not work, depending on the particular weld joint, is to put a piece of copper on the back of the weld.
Reply:pics man pics help alot  SS welds so nice  (tig)what s the ,settings, machine ,and suchneed infoidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:You need to either back the weld with copper or aluminum blocks OR somehow purge the backside with argon/nitrogen.You could also use solar flux but thats usually my last resort.Have we all gone mad?
Reply:1/16 filler is to big for 16g in my opinion. It takes some heat to get the filler to wet in there at all and by that time you've toasted your basemetal> to do it successfully with 1/16 filler you would have to dip really far apart and be hot and fast to not heatsoak the material.  try some .035-.045 filler(you can use mig wire too) and set your machine around 35 amps for a butt weld and 50 amps for a fillet. you can probaby adust those numbers by 10 amps either way since people weld at diff speeds. If you still arent getting the results you want run passes without filler until you get the speed vs amps thing figured out and then add some filler to the mix.
Reply:I am no expert with stainless tig but i know that you burn the chromium with to much heat imput so i genrally tend to run about 100amps on 3mm and just run it real quick and i get a nice pinky blue bead and i spose running it hotter will help with the peno hope that might help ya good luck