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6th Nov 2017, 08:38 PM #16Philomath in training
- Join Date
- Oct 2011
- Location
- Norwood-ish, Adelaide
- Age
- 59
- Posts
- 6,540
I must admit that although always meaning to get one, I haven't got a dedicated grinder either. The issue is all about contamination control. If you are doing non structural work (that is, welds that are not critical to the structural integrity of the piece, and are not highly stressed) on materials that are tolerant of minor contamination then you will probably be fine. At the opposite end of things if you are doing critical work to a welding code on intolerant materials, then you can't afford to take that chance.
Provided that the wheel is clean (not clogged with other materials) for trying things out you should be fine. if you like the process then there is time enough to get another grinder.
Michael
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6th Nov 2017, 08:50 PM #17Senior Member
- Join Date
- Mar 2014
- Location
- Sydney
- Age
- 46
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- 121
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6th Nov 2017, 10:18 PM #18Diamond Member
- Join Date
- Jun 2010
- Location
- Canberra
- Posts
- 1,322
I'm still pretty new to TIG, but for sharpening electrodes, which I do in a batch after ruining my set of 10, I chuck each one up in a drill, then using my bench grinder that has a coarse wheel on one side and a linisher on the other, with the drill running at max speed, grind off major gunk on the side of the wheel, then move over to the linisher and finish it, in line with the belt, to a nice point (again with the drill running) using whatever belt happens to be on it. It takes maybe a few minutes to process all 10 tungstens, ready to be dipped again
As far as I can tell, the electrodes don't seem to be significantly contaminated, in that they produce a nice clean arc. Until I dip them.
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