On Tue, 15 Jan 2019 at 19:06, John Figie <[email protected]> wrote:

> "It is not good practice to program radius format arcs that are nearly full
> circles or nearly semicircles because a small change in the location of the
> end point will produce a much larger change in the location of the center
> of the circle

It would be extraordinarily unusual to have a nearly full-circle in
lathe G-code. And even a semicircle is likely to be very unusual.

quarter-circles are very common.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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