How To Guide

An oxy-acetylene torch burns near 6,000F and feeds its own oxygen, so setup errors turn into fires and flashbacks fast. This guide covers cylinder handling, the 15 psi acetylene rule, flashback arrestors, soapy-water leak tests, shade 5 eye protection, and the OSHA 35-foot fire watch rule, plus a start-to-finish cutting walkthrough.

Welding galvanized steel vaporizes the zinc coating into zinc oxide fume, and a few unprotected minutes can buy you a night of metal fume fever - chills, fever, and body aches that arrive hours after the work. This guide covers grinding the coating back, ventilation, the P100 setup that fits under a hood, and why the old milk remedy is a myth.