right side or top side when drawing?

 From:  Doc (TONYG)
4950.26 In reply to 4950.25 
ok, the picture came thru. Ignore the middle drawing.
We are thinking of concentrating our efforts from the area where the arcs were used to the left (rear). We could use a tab to stop the machining farther forward than the arc used region??
The original pictures posted earlier will help show what our end result should look like.

Thanks again very much.

Tony