Welding Tips and Tricks

I’m starting to research what is required to setup a hobbyist welding shop in the San Francisco Bay Area. I’ve been welding at my parents farm in Illinois for the past ~10 years, but look forward to welding more that a few visits a year. Eager to learn how others in San Francisco, or California in general, handle some of the fire code rules that I’ve been reading about (e.g. do we really need a sprinkler system for a garage hobby welder!?)

Thank you!