RE: Cleaning glass for dryplates
I use this same formula. You can substitute hardware store grade denatured alcohol if you can stand the odor. Mix ingredients together in a clear applicator bottle (clear mustard/ketchup bottle purchased at drug store) and shake to re-mix each time you use it. After a week or two of sitting it will separate permanently and you have to start a new batch. Squeeze a quarter size round on each plate and polish with lint free cloth--I use old t-shirts. I recently spent time with John Coffer, however, and he just uses paper towels, whatever brand he is given. Mark -----Original Message----- From: kerik@kerik.com [mailto:kerik@kerik.com] Sent: Friday, December 08, 2006 7:20 AM To: alt-photo-process-l@usask.ca Subject: 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/ .
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