[ATM] Cementing the core back in place

["Christopher Dalla Piazza" <dalchri@hotmail.com>]

After trepanning, I cemented my cores back in place using silicon, tried a 
few wets of 120, and I'm not getting a good feeling about how much give 
there is in the bond.

I'm not worried about the bond breaking loose.  I am concerned about getting 
the whole way into the end of polishing only to discover that the 
flexibility in the silicon bond has made the core completely inneffective at 
preventing a turned down inner edge.

I'm thinking about going with the approach that Texereau describes using 
plaster of paris and a lacquer coating.  I originally wanted to use the 
silicon because it was not water soluble.

What do all of you use?

With a rigid plaster bond, would you recommend continuing spherometry on the 
center of the disk or to avoid measuring on the core?

Any trouble with a plaster bond breaking loose during the pressures of 
polishing?

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