One for the details blokes

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.I remember using a gadget similar to that when i was an inspiring apprentice.............

Thinking of piston rings, anyone remember Cord rings ..............
..................Billy.................

Well, ill be a monkeys uncle ..............they are still around...............

last couple of sets of rings I needed to gap I used old faithful angle grinder with 1mm cut off disc.

I thought Cord's rings were just the modern type (like red motor oil rings vs grey motor oil rings). I met an elderly bloke who told me about them years ago. Said they would happily re-ring 10 thou wear with Cord's rings.

Jarrod.

Billy P. I remember Cord rings well. After all it was only around 60+ years ago.

Cords became cup shaped when compressed, were installed one up one one down. Did control oil use but were said to wear bore excessively.
David.

Many moons back you had a choice of standard cast rings or chromium rings for Victa's. Same problem if you used chromium the bore wore out very quick.