Hey, I built my entire inside truck shelves and racking using O/A. It looks like TIG if you just practice.Thanks everyone and I'd like to try the RG45 Try Hot Wings tip to... I've been welding on my truck and getting my skills back up with sheet metal and some practice tube... I'll be starting the first stages of the LE XL the first of October... so want to get everything ready. I like O/A because I have cattle panels and metal gates etc etc scattered around where ther is no power and don't want to lug a big generator around... building a new horse run in too out of pipe and pro panels again where... so I need that versatility ... so thanks again, helpful information.