Starting with the Boll Aero 18

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Richard Hed

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Thanks for the tips. I'll have a look into turning the crank as one part.

How do you approach turning a crank? At the moment I think I would do it between two centres
Joe P has some good vids on utub :

There are also the 4-jaw chuck methods. Just one cylinder? Not so difficult.
 

Sprocket

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Yea if it rotated in the collet the the setup would be ruined. The collet had a good hold and I took very light passes.

It wasn't possible for me to put it directly in the 4 jaw Chuck as the small diameter of the shaft combined with the offset ment on of the jaws wanted to pass the centre of the chuck. As a result the two perpendicular jaws couldn't be used. Collet directly in the spindle wouldn't allow for throw turning and so I opted for the collet block in the 4 jaw option
Glad you explained the collet in the chuck. I was wondering about that setup.
Doug
 

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