Ugh , you sound like my dad . <| sep |> We used to use oxyacetylene , but switched over to oxynatural gas about 2 years ago . The lower temperature but higher BTU ' s of the natural gas actually make the job easier as we are less likely to scorch the tungsten . As far as torch tip sizes , I normally use a size 8 for everyday stuff , but the big stuff I use a size 12 rosebud . <| sep |> I want fusion sword ! It looks awesome ! <| sep |> Those are wild parrots that you ' re seeing ! <| sep |> Not that it ' s the end of the world but aren ' t the udacity courses still on python 2 . x ? <| sep |> Real salt . <| sep |> First they came for our porn , then they came for our imaginations wank bank , then we cried . <| sep |> They all actually die over and over again . Say no to god abuse ! !