Here is a work stop, for the mill, which I made.
I designed it with built up components, rather than larger parts, because I hadn't any rotary table experience at the time.
(Would have been a good time to start!)
It has worked very well for me the last fifteen years.
I ain't no draftsmen, so please point out any omissions, criticism's, in the PDF below;
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Edit: Sorry folks, I am having trouble uploading the 5.3 MB file. It has a picture in it which should have been re-sized, I think.
I'll try again tomorrow.