[ATM] Embedding polishing compound

[Mike Lockwood <melockwo@uiuc.edu>]

Vlad,

Vladimir Galogaza wrote:
> Mel,
>>3. Embed the polishing compound in the pitch immediately
> 
> Question was: What is embedding?
> 
> Answer was:
>>Embedding pitch: Within a few minutes, the pitch lap should show the
>>discoloration of pitch that's embedded into its surface.
> 
> More questions:
> "Should show" ! That means that it may not show within few minutes,
> under certain circumstances. What circumstances?
> What should we do to embed "immediately". Is there anything else 
> apart from  more pressure and slow motion that will assist
>  in accelerated embedding?

To quickly charge a pitch lap I sprinkle a generous amount of (dry) 
Cerium powder on the slightly damp, freshly-channelled, unused lap, 
and I spread it around on the facets with my finger.  Then I press the 
lap on the mirror with thick Cerium slurry until contact is achieved. 
  Repeat a time or two if you like.

This quickly gets Cerium into the pitch, resulting in nearly immediate 
polishing action.  Listen - you can hear it!

	Mike Lockwood

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