Subpopulus Hibernia said:
Had a chat with the father over the phone just now and he told me that the wetsuit kit came with all the pieces pre-cut. You got given a list of measurements to take, which you sent off, and then the wetsuit company did all the cutting. So you just had to do the assembly. So the old instructions in the attic are probably just that, assembly instructions, and not a pattern.
I can remember making my first two wetsuits in the mid-70s. I'm fairly sure the neoprene came marked-out bu not cut, so all you had to do was cut and glue... and if you wanted something that had a chance of lasting, sew up the seams with nylon line, and tape.
Cutting wasn't as easy it sounds, due to the need to get nice square edges. Obviously a nice sharp craft knife is the thing, but being young and stupid, I just used scissors which meant you got little steps in the seams every few inches, which were a point of failure.
The great debate amongst my friends was smooth vs sharkskin, and one-piece vs two-piece.
I favoured a smooth one-piece (where you get hole under your crotch) and my mate went for a sharkskin two-piece (where the crotch strap detaches itself).
Sharkskin was reckoned to be harder-wearing, but the smooth was easier to patch when it went....