Wow I just found some more good reading -- All of

Basically its just Geometery and layout, how to make any shape and any size using just a compass and ruler like Euclid did 2500 years ago.

The reason I went looking for a book like that is to answer a lathe question: How can I take a piece of round stock and turn it into a hex stock using only the lathe with 4-jaw? Accuracy doesn't have to be great, certainly no better than you would get with hot-rolled. Lengths no more than (say) 6 inches or 150mm. Round to be any diameter initially.

How would you do this?

*Euclid's Elements*(13 volumes) on archive.org. From the classic 1800's translation by Sir Thomas Heath, published 1908. Very handy for machining, in general. Link: https://archive.org/details/thirteen...ge/n8/mode/2upBasically its just Geometery and layout, how to make any shape and any size using just a compass and ruler like Euclid did 2500 years ago.

The reason I went looking for a book like that is to answer a lathe question: How can I take a piece of round stock and turn it into a hex stock using only the lathe with 4-jaw? Accuracy doesn't have to be great, certainly no better than you would get with hot-rolled. Lengths no more than (say) 6 inches or 150mm. Round to be any diameter initially.

How would you do this?

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