made my bid on the 225.Couple questions on consumables.1-what tungston size/type and settings do you recommend for .120" mild steel tube(motorcycle frame)and what filler wire size and tip would work best for this.also would the same set-up work for hooking the tube to 3/8"plate.Same questions for 1/4"aluminum(just have to play with some aluminum because i can)except just want to practice with it since i have a ####load of 1/4"scrap aluminum.