Butt Joint please read

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in my high school im taking a welding class   i love welding sooooo much that ive already decided to make welding my career  ive currently "graduated" from Stick and Flux cored arc welding but i had some trouble with lap joint for both of them (mostly FCAW) also i was watching world skills and saw a welder weling a bevel joint with a .5 inch gap                  he nailed it    so i tried it a school...... no luck ii was confused because the gap was larger than the stick electrode so i trried weaving it and it failed as well  any tips?????????
Reply:Without a backstrap, the root opening should be NO more than the diameter of the electrode. WITH a backstrap ,i see NO need for more than a 3/8th  inch root opening . Anything more is just making it more difficult to weld. why create roadblocks  ?[SIZE="5"Yardbird"
Reply:Just like anything else there are so many variables. Depends on a lot of things.Keep practicing.  1/2"?  Yeah that would be tough. weld it like you own it
Reply:Was it 1/2" across the bevel, or the root opening? Was he using backup? How thick was the plate? What diameter rod was he using? That's a pretty large opening to fill with one pass, unless you're using some big rods!--------------------john
Reply:I don't believe you should beat yourself up over a "showboat" weld joint. In reality, fitup should be better to begin with.City of L.A. Structural; Manual & Semi-Automatic;"Surely there is a mine for silver, and a place where gold is refined. Iron is taken from the earth, and copper is smelted from ore."Job 28:1,2Lincoln, Miller, Victor & ISV BibleDanny
Reply:At the local college, our root passes are 1/8" welding 1/2" bevel.
Reply:actually i may have exxagerated the root opening it may have only 3/8 inch                             but actually he didnt use a backing strip but he was also welding 3G Vert up
Reply:cwb plates are 1/2 gap on flat,vert,overhead, and horizontal is 3/8" all w/ a backing. I do mostly pipe welding, but when i was doing my apprenticship levels and doing the 3/8" plate vee - butt joints, we used 1/8" 6010 on all pass's. I used a 3/32 gap, and land. Their is no way you would fill a 1/2" gap in one pass sucessfully. Maybeeee if you turned you machine to straight polarity and set it to like 30 amps and weaved, but that'd take you a lifetime.