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.