Newbie - G COde question

I have just converted my Sherline lathe to CNC (Progressive Logic)
and have be learning G Code.

I need some advice from the experts.

I have a 3/4" round aluminium which I wish to round the end on. As
the maximum acceptable cut on the Sherline is about 0.02" I obviously
need to take several passes at cutting the curve.

Can anybody give me a clue as to how the G- Code should look?


Thanks


David Da Costa