You specified a first surface mirror but you seem to have sold me a second surface mirror. What happened?

A majority (but not all) of our first-surface mirrors are shipped with a protective plastic coating (a type of Molar® film overcoat) that protects the reflective surface. If the second surface is not ground, it looks like a second surface mirror when it is viewed from that side, but actually it is the bottom of the first surface coating reflecting through the glass. The plastic coating makes the top of the first surface look slightly dull and typically bluish in color as the mirror is tilted. The protective plastic coating can be removed by using Scotch® Tape or non-marring tweezers. Refer to the diagram below or view our video Removing Protective Plastic Coating for more information.

How to Remove Protective Plastic Coating on Optical Mirrors

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