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Forum sponsored by Allendale July 23rd

Making the same mistake

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BOB BLACKSHAW15/08/2019 17:02:58
192 forum posts
35 photos

I always make a cam and make the same mistake, its not so obvious until I've made it, then think it out the realize what I have done wrong.

If I was making a hundred in a factory, not being a turner what a cockup I would of made.

I have a 3.5mm offset, so I off set 3.5mm on the clock on a four jaw chuck, but that only gives me 1.75mm offset on the cam.

Its logical to move 3.5mm and get 3.5mm, but it don't work out like that, sorry if this is a basic post.


Nick Clarke 315/08/2019 17:12:43
359 forum posts
9 photos

I hear and share your pain!

mechman4817/08/2019 11:02:35
2432 forum posts
372 photos

Try & set it 'double' on the clock just to see; otherwise set it up to run true with a live centre in the offset centre pop, adjust the jaws to nip it, set the clock to run true on a silver steel shaft with a male & female centres in either end & you should be on the mark.


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