Re: [ATM] Protect a finished optical surface to work on reverse

["Philip Lardner" <philiplardner@eircom.net>]

Collodian can be obtained from suppliers of wet-plate glass photography in
the States and elsewhere. Google "collodian process" or "wet plate
collodian."

Phil.

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net]On Behalf Of
Larry Arnold
Sent: 12 March 2007 18:47
To: Christopher Dalla Piazza
Cc: atm@atmlist.net
Subject: Re: [ATM] Protect a finished optical surface to work on reverse

There is a product made for this purpose, called "Pre-cote 33 Blue
Spray" protective coating, part #LB0004 sold by Universal Photonics,
Inc. Hicksville, New York. It comes in an aerosol can and is applied
like spray paint. Dries in a couple minutes for handling. To remove,
just peel it off. I've used it for years to protect my finished
mirrors from dust and fingerprints from handling. I was unable to
obtain collodian, as Thomas suggests, since it's considered a
hazardous material in California.

Their website is under reconstruction and doesn't tell you much, but
you could call them for more info at (800) 645-7173.

Larry

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