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Thread: lapping 8k norton
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12-09-2009, 05:25 AM #6
One subtle trick when rubbing a pair of stones together is
that the top one gets concave and the bottom one convex.
If you alternate top and bottom you might see less dishing
while you are saving for that D8C (or larger). In part this is how
mirrors for reflecting telescopes are ground.
While we are on the topic of lapping can a swayback
but level large hone be used to advantage. A crown or
trough (smile or frown) is problematic but what about
a bit of swayback shape. I ask because a half inch (1.5 cm)
chunk of bar stock square or round is easy to come by
and I have a big fast cutter that has a kitchen knife induced
sway back. The geometry I am thinking of is the inside of a
cylinder +ten feet ( 3M) in diameter.