From: "Mel Bartels" 
To: 
Reply-To: "Mel Bartels" 


>>>
1)How do I remove the pits in the center, without making the hole even bigger?
2) Will the pits go away eventually if I go back to TOT with 1/3 normal
strokes? (I tried this for 1 hour of polishing, and could not see a
difference) 3) Should I quit trying to polish the center and use a modified
pressure or small tool to bring everything down to the level of the center
hole? 4) Do I need to bring everything to a sphere, or can I somehow modify
what I think is an oblate figure? 5) At what point is the lap too thin? I
hate to start a new lap since this one seems to fit well, but I want the
best mirror I can make. Thanks for the help!
<<<

I always recommend that one never tests the mirror figure before polishing
is complete.  Incomplete polishing has a particular set of figures that can
cause a lot of worry and wasted time.  The crucial question here is how
pitty are these pits?  Normally you will never polish out pits in your
lifetime.  If they are the sort of tiny white specks that remain after
flash polish, then yes, they will come out.

Mel Bartels

--- BBBS/NT v4.00 MP