Gallery, Projects and General > How do I??

12x7 lathe - what is smallest diameter for internal threading?

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bogstandard:
What you are asking Chris, is the same as 'how long is a piece of string'.

When you start to cut your own threads, only then will you know just how small you can make the screwcutting tool.

I have made boring bars, very similar to a screwcutting tool, as small as 1mm, out of an old drill, but using it for a production job and very intricate work is only a thing you can do yourself, by trial and error.

As John said, you could most probably make up your own multi start screw cutting gear, I am sure the pen manufacturers don't do it by single point, but again, because it is so specialised to your hobby, you would have to do it all yourself.

I am sure there is a toolmaker somewhere that will make just what you want, but even on the cheap side, I wouldn't see you getting a set made for under a grand a pair, maybe a lot more. Those sort of chappies don't work for peanuts.

Bogs

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