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Re: [ATM] Pitch laps!!!

Hi Mitch,

Monday, April 9, 2007, 1:56:29 AM, you wrote:

M>      Someone else got most of the answers but remember dental plaster (and I
M> would guess most other types) are probably a lot softer than Pyrex (or
M> plate) so it shouldn't scratch it.

But most plasters also have a lot of impurities in them, the favourite
being Quartz which is harder than most types of glass. In fact it is
an ingredient of normal base coat plaster hence the warning labels
telling you not to breath the dust.

-- 

Best regards,
  Richard in the UK

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