I'm building - and learning much from - my first 'clock' - the John Wilding weight driven egg timer - from the original HJ articles.
I'm a little stuck on a 'missing' dimension in the drawings - the tip width of the teeth in the 48-tooth ratchet wheel. In the text, this is not really described - other than saying a small 'witness' should be left - I was thinking that something around 0.02" (0.5mm) might be appropriate - or would more (or even less....!) be better ?
I'm making a custom cutter to cut the teeth, to this is quite an important number......
It's very possible that it's better described or specified in the later re-print as a separate project in his book, but I don't have a copy......
Advice, pointers and hints gratefully received !