Does welding over a gap require less heat/voltage?

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Due to my non-perfect cutting with a grinder I had a 1/8" gap to weld over between two pieces of 1/8" square tube. One piece ran perpendicular to the midpoint of the other so only one edge was fully exposed inside and out.I'm using a Hobart AutoArc 130 mig and to weld 1/8" i have it set to 10/100 on the wire speed. When welding this joint I noticed it really melted itself into the work to the point that it actually looked like the weld bead was sunken into the material by a small amount.I ended up grinding it down flat and running another bead right over it but what can I do to mitigate this?
Reply:Perfect fit up is the key to perfect welding. If it wasn't perfect you should have never started. Not sure what the project was for, but show some pics and that will definitely help. Filling gaps is not so much a big deal for certain projects or jobs, but there is a skill level involved depending on the task at hand.I hate being bi-polar it's awsomeMy Heroes Have Always Been Cowboys
Reply:Originally Posted by weldermikePerfect fit up is the key to perfect welding. If it wasn't perfect you should have never started. Not sure what the project was for, but show some pics and that will definitely help. Filling gaps is not so much a big deal for certain projects or jobs, but there is a skill level involved depending on the task at hand.
Reply:are you butting the 2 tubes together? If you are that is normal and is not bad cutting. if you work the center of the bisecting tube with a hard disk and not the edges it will force the corners to wrap better.Miller Maxstar 200 SDPiperliner #10 Gold
Reply:Yea I was butting the tubes together. One tube going lengthwise and the other with the end going against it along the length of the other tube.
Reply:I'm kind of lost, can you post a picture?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:Focus more heat on the rounded edge. sometimes with a gap you will have to build up one edge first with a separate bead. Keep in mind that gaps will shrink some with the heat of the weld. Gaps are many times unavoidable, try fitting into an existing structure you will find that out real quick. Heavy wall square tube can be a real treat, sometimes you will have to lay a rod or strip into the joint, but it works.Miller xmt304,  Miller S22 p12, Miier Maxstar SD, Miller 252 w 30A, Miller super32p12, Lincoln Ranger 9, Thermal Arc 181I with spoolgun, Hypertherm 10000 ,Smith torches. Esab 161lts miniarc.
Reply:Originally Posted by weldermikePerfect fit up is the key to perfect welding. If it wasn't perfect you should have never started. Not sure what the project was for, but show some pics and that will definitely help. Filling gaps is not so much a big deal for certain projects or jobs, but there is a skill level involved depending on the task at hand.
Reply:In the trade of welding, perfect fit up is a dream but it's hardly reality. You have to learn how to deal with gaps etc. that's part of being a good welder.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:don't you love it when people refuse to disclose what they're doing/post up pictures lol  1st on WeldingWeb to have a scrolling sig! HTP Invertig 400HTP Invertig 221HTP ProPulse 300HTP ProPulse 200 x2HTP ProPulse 220MTSHTP Inverarc 200TLP HTP Microcut 875SC
Reply:I love bad fit up.  Not.Miller Maxstar 200 SDPiperliner #10 Gold
Reply:Originally Posted by Oscardon't you love it when people refuse to disclose what they're doing/post up pictures lol
Reply:Originally Posted by BD1Ah come on MIKE. ANYBODY can do it with a perfect fit up !   The better the fit up , the quicker you can make the weld too. Granted , sometimes it doesn't work that way on a real job. That's why there are professional welders. Like the old guy said, If I can walk across it , I can weld it.
Reply:In all seriousness Mike, you are not '' average '' my friend . I was gonna post some wise a$$ remarks MIKE, but it is CHRISTMAS SEASON !
Reply:LOL Bob, shoulda let me have it! I love ya bud, same sense of humor! I wish we lived closer man, we would really have some great laughs together!  I hate being bi-polar it's awsomeMy Heroes Have Always Been Cowboys
Reply:Originally Posted by weldermikeLOL Bob, shoulda let me have it! I love ya bud, same sense of humor! I wish we lived closer man, we would really have some great laughs together!