MichaelV
Member
- Messages
- 242
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- Co. Antrim
Dear TIG hands
I'm making some lightweight frames from mild steel tube, with 2.5 mm wall thickness. Many of the joints are square butts, with 1 mm root gap. I'm running ER70S2 filler rod, 90 amps, using 2.4 mm lanthanated electrode. I'm happy with the welds, with the slight exception of the very end of the run. See the pics below.
I've tried various downslopes, etc., but am finding it very hard to avoid creating a slightly raised "bump" at the very end of the run. There's even a wee ball of silica sitting on top
Although I'm only footerin' about, any tips are gratefully appreciated.
Thanks
Michael
I'm making some lightweight frames from mild steel tube, with 2.5 mm wall thickness. Many of the joints are square butts, with 1 mm root gap. I'm running ER70S2 filler rod, 90 amps, using 2.4 mm lanthanated electrode. I'm happy with the welds, with the slight exception of the very end of the run. See the pics below.
I've tried various downslopes, etc., but am finding it very hard to avoid creating a slightly raised "bump" at the very end of the run. There's even a wee ball of silica sitting on top
Although I'm only footerin' about, any tips are gratefully appreciated.
Thanks
Michael