Greetings Gents,

I am currently working with some of these machines and have been experiencing some weld failures, Typical ones include Incomplete fusion(Sidewall) and large random stretches of wormhole porosity. I would love to talk with some experienced operators and get any advice or feedback on these machines I could..Model number is VUPNA - 3ST all the power source and welding equipment is Lincoln.I am a newbie when it comes to these machines so ANY information you could share would be fantastic...

Please give me a yell if you require any further information..

Looking forward to reading your comments

Thanks in advance

AL