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[ATM] Pitch Lap channels

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Subject: [ATM] Pitch Lap channels
From: "C Abarca" <ccabar@bigpond.com>
Date: Mon, 4 Sep 2006 22:32:45 +1000
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Hi guys I'm making a secondary mirror for a classical cassegrain and I would like to know if you still need to put in  grid lines on the pitch lap and if so what sizes. The mirror is 10cm diameter. I have already poured the pitch onto a plaster tool. I'm down to my last powder and will be ready to start polishing in the next few days. Any help would be appreciated. thanks.

Regards Cristian
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