This is absolutely not true concerning lamp or bone black. Carbon comes in many forms, polymorphs, e.g. crystalin as in diamond which is very hard indead, in sheet form as in graphite and only weakly bonded where it is very soft and will not wear bearings when used as a lubricant. Graphite hardness is between 1 and 2, just a little harder than talc which is used as an example of the softest end of the scale. Free carbon aggreate is softer yet. Before typing uninformed opinions, try using Google or some other search engine to verify your suppositions before you sent out erronious crap.
Regards, Bob... -------------------- "They call it PMS because 'Mad Cow Disease' was already taken." - Anonymous, presumed dead. From: "graywolf" <[EMAIL PROTECTED]> > Well, carbon is the hardest stuff known, so of course it has an abrasive effect. > But the stuff used for this is super, super fine so it polishes rather than > scratches. I would not recomment daily use though. > > Steve Desjardins wrote: > > > That's an interesting idea. I am always reluctant to use a powder > > because most have some abrasive effect. Is this not a problem? > > > > > >>>>[EMAIL PROTECTED] 02/18/04 10:27AM >>> > > > > The problem I've had with volatile liquids (alcohol, acetone, etc...) > > is > > that while they'd dissolve many oils & greases, they'd also have a > > tendency > > to evaporate while cleaning. This would leave much of the original > > problem - > > just spread out and sometimes so thin and even that I didn't notice it > > was > > actually still there. Super ultra fine activated carbon (lamp or bone > > black) > > never does this. The carbon sucks that stuff up and removes it from the > > lens > > entirely. > > > > Regards, > > Bob... > > ---------------------------------------------------------------- > > They call it PMS because Mad Cow Disease > > was already taken. > > - Anonymous, presumed dead. > > > > From: "Steve Desjardins" <[EMAIL PROTECTED]> > > > > > >>I'd use isopropyl alcohol and not acetone. Acetone is just too > > > > likely > > > >>to dissolve stuff you'd rather have remain in the solid state.
