Letter Re: Post-TEOTWAWKI Welding
Dear Jim, I have been a welder, machinist, engineer, and someone interested in self-reliance for many years. I read the recent discussion on SurvivalBlog of post-SHTF welding with interest. I do not disagree that thermite could be made from scrap yard materials (done it, with aluminum filings and black sand (magnetite) from the river), but it would require a custom-made refractory mold for each joint. IMHO two other forms of welding would be much more practical. Forge welding was the only available process up into the 1800s, and requires only anvil, hammer, fire of coke or charcoal and forced air. …