what size aluminum wire to use Home › Forums › Weld Forum › what size aluminum wire to use This topic has 0 replies, 1 voice, and was last updated 9 years, 2 months ago by admin. Viewing 1 post (of 1 total) Author Posts July 1, 2008 at 7:22 pm #141 adminKeymaster what is the best size aluminum wire to use for general purpose repair work with a trailblazer 300d and a spoolmatic 30a the thinnest i weld is 1/8 and if you know of any good parameters for the size wires. thanks Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In