Welding with TIG but need to bend a few pieces of .050 sheet and tubing (all 4130). Tried my propane torch - nothing - but the flame wasn't very focused either. Would a more focused tip be enough? MAPP seems inexpensive but the bottles don't seem to last very long (2-4 hrs?) however, 2 'rounds' of tanks may be enough for my needs. Obviously O/A would do it all, but I don't want to invest in another big setup. Anyone else have a similar situation? What are other folks using? Thank you!