Tigging heavy Metal..

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Heres some of todays fun...Snowplow skid plates for a really big snowplow..The plates are..Bottom..6"x1"x18"..Top...1 5/8"x5"x14"Heres the bottom plate..Jeesh...all that scale has to go..After grinding..Time to tack..Do the ends first then 3 on one side..Then the other side..There are 2 tacks shown..the furthest one away is there only to show you your start point...And we'll pick this up in the next post.....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:Now start where I told you and do a root pass..Now do a second pass over it but go in the opposite direction..As you can see it did'nt get much bigger but it took alot of filler..Now final stitch pass..go opposite again..And there we go!Everyone usually asks what size cup? tungestion? amps?Heres the 3/32 red end and the cup size after I was done..No I did not re-grind for the pic..If the gas and the heat and your hands are in sync with each other contamination can be all but eliminated!!I did 4 of these assy's in 2 1/2 hrs..I get all the fun jobs.....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:why do you alternate direction each pass? and should that be done for everything that gets more than 1 pass, or only on certain occasions?and have you ever accidentaly welded the dime to the workpiece?
Reply:Looks good, I want to see the big azz plow truck they go on!John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:why do you alternate direction each pass? and should that be done for everything that gets more than 1 pass, or only on certain occasions?
Reply:lol, thanks for the tips man.  Looks great as allways.Various GrindersVictor Journeyman torch200cf Acet. 250cf oxygenLincoln 175 plus/alpha2 gunLincoln v205t tigLincoln 350mpEsab 650 plasmaWhen you can get up in the morning, Its a good day.Live each day like its your last.
Reply:Zapper welded the dime to his work once, but he got 9 cents change !Not a beginner, not a pro !
Reply:Soooooooooo  how many amps did it take ?Not a beginner, not a pro !
Reply:Originally Posted by PlanewelderSoooooooooo  how many amps did it take ?
Reply:Once again, a very pretty weld.I assume the weld was brushed prior to the photo, just because I don't see any heat tint color.  I guess a heavy section cools fast enough that discoloration is less than a thin piece.  Just curious what on the effectiveness of your shielding.Can't think of any reason why alternating direction for each pass would make any difference, one way or the other.
Reply:Can't think of any reason why alternating direction for each pass would make any difference, one way or the other.
Reply:Lovely welds Zap.But for those of us "Down under"....I know a coin will give an idea of the size of the welds but only if your know how big the coins are!  How big is a nickle?
Reply:That's actually a dime (10 cents) which is 17.91 mm widea nickle (5 cents) is 21.21 mm.Why do I know this you ask? Because I work at the mint.... ok not really I just googled it:http://www.factmonster.com/ipka/A0774847.html- John
Reply:As Always, nice work Zap.  I used to work for an old guy that said the same thing:  "Because I said so".  Now I find myself saying it to trainees.Hobart 140 Handler w/ gasHyperTherm Powermax 380 Plasmaoxy/acetylene
Reply:That is the short answer. I will end up saying that before too long. John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Old Sam Haw used to say, "am I right, or am I right"?He was always right.
Reply:Out of curiosity, what type of steel are those skid-shoes?  Plain ole mild steel, or some AR plate?Next question Zap.  Why no bevel prep on the edges of the vertical 1-5/8 inch thick plate?  Because the weld as done will be plenty strong for the use and beveling would just be overkill and cost more time and money and filler rod?And is the next part of the welding and fabrication the addition of up-curved 'ski' tips to the leading edge of the horizontal plate?
Reply:Originally Posted by MoonRiseOut of curiosity, what type of steel are those skid-shoes?  Plain ole mild steel, or some AR plate?Next question Zap.  Why no bevel prep on the edges of the vertical 1-5/8 inch thick plate?  Because the weld as done will be plenty strong for the use and beveling would just be overkill and cost more time and money and filler rod?And is the next part of the welding and fabrication the addition of up-curved 'ski' tips to the leading edge of the horizontal plate?
Reply:You could weld it faster, cheaper &with less heat (jewels) input , with low hydrogen  7018 . I always loved weldind heavy  thick steel with stick. of course you need a good heavy duty  D C machine , or a REALLY heavy duty a c machine and run 7024. On flat heavy  plates jet rod (7024) welds really easy .[SIZE="5"Yardbird"
Reply:Yeah, but Zap! is a man of TIG. I believe one of his posts indicated he hadn't sticked in 4 years. (Coulda been someone else...I dunno)Hate to nitpick, but we usually try to avoid using jewels in the welds...too much contamination...however, joules are very important...
Reply:Originally Posted by Roy HodgesYou could weld it faster, cheaper &with less heat (jewels) input , with low hydrogen  7018 . I always loved weldind heavy  thick steel with stick. of course you need a good heavy duty  D C machine , or a REALLY heavy duty a c machine and run 7024. On flat heavy  plates jet rod (7024) welds really easy .
Reply:Nice job Zap..... but I would expect no less.... _________________Chris
Reply:Originally Posted by lorenzoNice job Zap..... but I would expect no less....
Reply:Originally Posted by runchmanThat's actually a dime (10 cents) which is 17.91 mm widea nickle (5 cents) is 21.21 mm.Why do I know this you ask? Because I work at the mint.... ok not really I just googled it:http://www.factmonster.com/ipka/A0774847.html- John