ive only been tigging for 6 months, but been a boily for 12 years. this is the first time ive had trouble with it. The tungsten keeps burnig back before i can start adding da filler rod..
been chatting with rthibeau and he told me that i might be holding it to close,the head might be dirty.
if anyone else has any other problem solving ideas it would be greatly appreciated. thanks for you time........:):cool:

ive been using red tips (th) 1.6mm on mild steel

sounds like your polarity needs switching.
Travis

either polarity switched or amps too high or no or low gas flow
Ken

If it is burning back, but leaving a ball on the end, it is the wrong polarity. If it is just disapearing, the heat is too high for the size of the tungsten.

thank you all figured it out....it was the polarity......i was having a bad day :)

With some GENERIC BRAND TUNGSTEN! You get what you pay for sometimes.

Mark