Re: Cleaning glass for dryplates
My understanding is that Rottenstone is mostly calcium carbonate with a few
other fine abrasives mixed in, but not pumice. For cleaning glass for wet
plate collodion I use a mixture of roughly 1/3 (by volume) calcium
carbonate, distilled water and 190 proof alcohol. I found that I got more
residue with rottenstone than with pure calcium carbonate, so I switched.
Kerik Kouklis
www.kerik.com
Original Message:
-----------------
From: John Cremati johnjohnc@core.com
Date: Fri, 08 Dec 2006 09:40:05 -0500
To: alt-photo-process-l@usask.ca
Subject: Re: Cleaning glass for dryplates
The guys the clean lenses use 190 proof grain alcohol and
possibly some distilled water..... Bon Ami is the same as Rottenstone sold
in grocery stores.... It is a fine grade pumice that will not scratch the
glass and is actually used as one of the preliminary steps in polishing
glass prior to cerium oxide as the final step...........
John Cremati
Rottenstone (available in hardware stores) mixed with alcohol to make a
slurry. Wipe really well and then wipe off the sludge with a lint free
cotton cloth such as an old T-shirt.
On Dec 8, 2006, at 7:47 AM, richard jones wrote:
I'm searching for glass cleaning concoctions for preparing dry-plates,
any suggestions? Up till now, I've been using Sodium Carbonate 1tbsp in hot
tap water and kitchen towel. This seems to work quite well, 'till the plate
dries and I'm left with very faint marks caused by residual carbonate. No
matter how much I rinse, I still get these marks.
Richard
--------------------------------------------------------------------
mail2web - Check your email from the web at
http://mail2web.com/ .