via HACKADAY: Retrotechtacular: Solder Like its 1944!

When we first saw this 1944 US Office of Education film about hand soldering, we figured it might still have some good information. Well, perhaps it does, but the 1944 soldering was with a giant iron, and the work looked more like metal bricks than anything we’ve soldered lately. Of course, the physics is all the same, but some of the terminology, like “sweating in” isn’t anything we’ve heard before, although we have heard of sweat soldering.

They do show some electronic soldering on components, including some interesting-looking coils. But the irons look more like a bad science fiction movie’s idea of a lightsaber. The solder is equally huge, of course.