Goofin Off... Tig Practice

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Wanted to try and do a full penetration weld with my Tig. I primarly use my tig for sheet metal and this is the first time trying this so be easy on me.My timing is not that great and where I stop for my tie In's there was a little crack at the end. I don't think i protected it long enough with the gas. I'm not sure what to look for. I took some close ups if you see anything please let me know. I love feedback that helps me improve.Going to watch some football I will fill in later. Might be next weekend I have a busy week ahead of me.
Reply:Looks a little cold to me.What thickness of metal?What parameters did you use?  Amps, etc.
Reply:1/4'' and was running 128 amps. I was worried it was to hot. It's digging pretty good but like I said this is my first time with this thick of material. So I don't know and is why I put it out there.Thanks for the feedback.
Reply:yep for 1/4 inch its cold a good average is 1amp for every .001 (.250 =1/4"i would go 220-250idealarc 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:128 amps is a bit cold for 1/4What plate gap where you running?  Looks a little large.
Reply:1/4'' on the gap220 to to 250 I can not do here at the house. It will blow the breaker.Man that is hot I would have never guessed that I am glad I asked
Reply:so 1/4 inch gap?? what thickness is the plate ?? thats to big of gap you can allways go to millers site and use the welding calculators they have them for Mig,Tig, an Stick (gives all the setting you need to startif you don't have, you may want to get their student pack best 25 bux you can spend being a new weldorif you are gona be welding thick metals ya need the power as simple as thatLast edited by prop-doctor; 11-06-2011 at 03:43 PM.idealarc 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:he is not trying to one pass it..so he does not need 250 amps..with a 1/4 gap hes trying to heat the backyard...try a smaller gap, put in a root, and put some stringers side by side..i guess that v groove is 3/4" wide at the top...are you getting a puddle  withina second or two of starting the arc?
Reply:Yea I was planning like 6 passes on the weld joint and then torch off the backing plate.Yea the puddle with in  second or two.
Reply:Originally Posted by jhnarialYea the puddle with in  second or two.
Reply:Originally Posted by weldbeadhe is not trying to one pass it..so he does not need 250 amps..with a 1/4 gap hes trying to heat the backyard...try a smaller gap, put in a root, and put some stringers side by side..i guess that v groove is 3/4" wide at the top...are you getting a puddle  withina second or two of starting the arc?
Reply:I'm going to start over, what would be a good gap? 1/8''?
Reply:Originally Posted by jhnarialI'm going to start over, what would be a good gap? 1/8''?
Reply:Thanks for the helpI have some 3/16'' scrap, I am going to try it next timeThanks again.... I will post new pictures soon