I'm welding two thin (22 gauge) pieces of steel together at 90 degrees, using TIG. The puddle is so small that filler rod won't melt into the puddle, so I'm attempting it without any filler. Seems to work okay, but the arc is small and low energy and as a result my helmet does not reliably darken. It tends to flick on and off. Very distracting.
Is there anything wrong with it? Any adjustment available for its sensitivity?