Archived posting to the Leica Users Group, 2002/03/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>As a practicing dentist for the past 25 years, I can tell you that >toothpaste not only will remove just about any lens coating, but will also >remove a fair amount of the lens element itself. You'll have a cloudy lens >in no time! Toothpaste contains varying amounts of pumice and is very >abrasive. I've seen patients over the years who are so aggressive with a >toothbrush and toothpaste that they have removed tremendous amounts of >tooth enamel such that the tooth has snapped in half due to >toothpaste-induced erosion. Tooth enamel is far harder than any lens I've >ever seen. As an aside, toothpaste can remove scratches in your car's >paint or clearcoat quite nicely if used in small amounts on a wet rag. Peter W. Klein DDS Melbourne, FL > > In a message dated 3/3/02 4:40:46 AM Eastern Standard Time, > > Dr.Alexander.Kraus@gmx.de writes: > > > > > I had good success removing older coatings with toothpaste in the > > > past. You have to rub a little bit until it comes off, but it doesn't > > seem > > > to harm the glass. > > > > I wonder. Most toothpastes contain pumice. That's a grinder/polisher. I > > guess > > I'm pretty certain it will remove coatings; I wonder if it won't also > > remove > > glass, i.e. act like a fine polishing agent. > > > > Seth LaK 9 - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html