Came across these videos a while back, "Old Education Videos" is the name of the group of videos. If you haven't seen them, enjoy.

Watch "BBC Technical Studies Welding Techniques" on YouTube

 

Thanks for sharing this. I love watching videos like this, the ones where you learn something even though you didn't know you needed to know it lol. I've always been curious just what a spot weld looked like on the inside and now I know. And friction welds have intrigued me every since I first heard of them.

I just chose one at random to link too, there's loads of interesting ones, there's a good one on fixings.