Search results

Yeah, cutting through heavy rust is like cutting a box of 4th of July sparklers. All that oxygen in the iron oxide gets liberated at once as the torch tip goes by and it can be spectacular. Like JimK sez, a heavy straight edge (1"X3") is a must. I watched a guy waste a sheet of plate because, as...

For preheat: a ring of short 3/8" to 7/16" bright blue points inside the cone of flame. Tips of this ring of flame should just touch the work-- the tip of the cutting torch will be about the same distance off of the metal's surface. Allow the metal to become bright red to orange before pressing...

All excellent points jimk. Another quirk is that cast-iron can't be cut either. Avoid synthetic materials for clothing as it'll melt and fuse to skin. Wear leathers or other heavy protection 'cause a red hot drop of metal down the glove, waist-band or boot-top can sure take your mind off keeping...

Here's something else to consider. If the corregated material is ex-roofing or siding; watch out for galvanizing. The zinc released by cutting is very bad for you if inhaled. Stay safe.