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Mirror substrates Pyrex vs exotics.
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19-05-2015, 06:58 PM
glend
(Glen)
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Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,051
Andrew there is an endless discussion of this topic over on Cloudy Nights, if your interested:
http://www.cloudynights.com/topic/50.../#entry6589460
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