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Re: ATM Central Hill
Alan:
Here's what I'd do, using a full sized lap. Go back to c/c 1/3 strokes to
help your edge, then lengthen the strokes (still mostly c/c) to make your oblate
mirror (another way of looking at that large, broad central hill) more
spherical. Once you have a spherical mirror with a good edge, then go to W
strokes to parabolize. Expect many iterations until you get acceptable
results. It's a great education. BTW, have you read Texereau? It is the
best. Steve Lindberg, Olympia, WA.