so, after sitting about feeling sorry for myself.. Ive made atleast a temporary measure... not sure if its good enough for the stresses of milling ali... but will be good enough for now I hope.

fortunately ive got that old ballnut... the one I broke previously... useful...

so; heres the plan

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cut the circle out with the band saw (roughly). so it will go in my three jaw lathe chuck.

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bore the center out with lathe
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then get cutting and tapping...

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seems to work... (Jonathon... if you need any help with your 'engineering' give me a shout