TIG Problems with sheetmetal

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Hi all,I restore cars and I bought a TIG welder to weld the panels and sheets.I have done my very best and I have gone through almost 2 large Argon cylinders but I still cannot produce any proper welds.The thickness I need to weld is 0.7 to 1.4mm.Scenario: I need to weld a patch into a panel.I have a DC machine and I use the lowest current setting (around 12-15A)that will actually create a weld pool. Then I try to weld the patch in by spotting it in places.The edges of the panel and patch just melt away from each other and  holes result which are very difficult to get closed again.If I hold the filler rod over the joint before welding the spot, I have better success but then the a hole often forms just next to the spot I welded.It is completely impossible (for me) to weld the gaps closed that exist from cutting the patch by hand. They just melt bigger and bigger.Is there a secret I am not aware of or do I need to get a different welder, like MIG, that will add filler rod immediately when starting the weld?Kind regardsBen
Reply:I am not a Tig Pro but I can and do weld sheet metal. It is kinda hard and takes some getting used to. Get the metal your welding close to the metal your welding it to. Don't try to fill a big gap until you get used to welding normal. Get comfortable and practice. you will get it. Mess around on a piece flat on a bench for a while before you try to weld it to a job. Make sure your tungsten is sharp and not out to far. Just my 2 Cents It works for me.Drivesector Hobart Handler 140Hobart Handler 180Ready Welder 2Hobart Air Force 400Airco Stinger 225Of all the things I've lost, I miss my mind the most."OZZY"
Reply:what size tungsten are you using?ChuckASME Pressure Vessel welder
Reply:Originally Posted by bens_groups2003Hi all,I restore cars and I bought a TIG welder to weld the panels and sheets.I have done my very best and I have gone through almost 2 large Argon cylinders but I still cannot produce any proper welds.The thickness I need to weld is 0.7 to 1.4mm.Scenario: I need to weld a patch into a panel.I have a DC machine and I use the lowest current setting (around 12-15A)that will actually create a weld pool. Then I try to weld the patch in by spotting it in places.The edges of the panel and patch just melt away from each other and  holes result which are very difficult to get closed again.If I hold the filler rod over the joint before welding the spot, I have better success but then the a hole often forms just next to the spot I welded.It is completely impossible (for me) to weld the gaps closed that exist from cutting the patch by hand. They just melt bigger and bigger.Is there a secret I am not aware of or do I need to get a different welder, like MIG, that will add filler rod immediately when starting the weld?Kind regardsBen
Reply:MIG welder working better on thin materials than TIG??????? Someone please explain that. What material are you welding again?
Reply:welding sheet with a tig is easy..practice practice practice...if you do use a backing "plate" use copper or aluminumthat way they wont stick to the back of the panel...straight argon around 20 scfh..get good coverage..helps keep the burn thru to a minimum......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Originally Posted by zapsterwelding sheet with a tig is easy.....zap!