Next layout the brackets, and cut. I used some thin aluminum to layout everything based on spindle center, then once i had a good grasp I used it for a template to center punch what would become my brackets.

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Previous post I forgot to reinstall. So here ya go. Interestingly enough, I checked runout prior to lathe work and after. Out of round was within .010, surface was within .007 after cleaning with wire brush. After lathe work both tolerances were under

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both brackets were cut from 6061 T6 aluminum I had laying around, it was 1x4 bar stock.

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milled down to .757 thick, as perscribed in the drawing, also rounded edges a little by pivoting on center of holes in my vice, sorry, don't have a rotary table. Also, test fit.