Using tool WP-9 and glass beaker #12, the tungsten insert does not protrude beyond the rim of the glass at all. If tungsten crosses the line it will work, but only in a straight line in a free hand. If tungsten even goes outside of glass, welcome to Spark City! I'm not sure what's going on other than not letting enough argon through.
Continental Conti4x4Contact 265/60 R18 110H summer
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