In a project I have slotted aluminum bars (1/8" by 1") crossing, lots of them, creating large mesh like assemblies.
For strength I need to weld a fair amount of these 90 degree crossings, so that would basically be a weld in 1/8" material maximum 1" long.
Well, getting close to the edge is not such a great idea so the welds are actually more like 1/2" to 3/4" long.
They ought to provide strength but they also have to look good!!
Here is what I find: I have a hard time to have the initial puddle connect quickly with both sides of the V shaped trough I am welding in, it always takes me a moment of struggle to have the puddle go to BOTH sides, not only to one, it seems to prefer one side though.
I find it a challenge to make such short and nice welds, often by the time I connect both sides with my puddle the overall size of the area affected is larger than I had intended to.
So here is my question, how do I get the smallest and deepest short weld in this situation??
I use a pure tungsten electrode, 3/32", 1/16" aluminum wire with 110 A AC, a number 7 ceramic cup and 25cbft. of flow.
TIA Uwe