Gents,
The electrodes of my RSG had quite an odd appearance when viewed up close,
after running at a recent teslathon, obviously not really mould, but I have
never seen this occur before:
https://www.flickr.com/photos/33962508@N03/16794887172/in/photostream/lightb
ox/
(click to enlarge)
Ablation was only around 10 thou or so, and the ridges that you see are
mainly formed by deposits. The outer two are the stationary pair (3/8 inch
Tungsten/copper alloy), while the centre one, is one of the four rotating
ones (0.25 inch thoriated tungsten).The other three looked the same. Power
was around 7.5 kw
Phil
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