Opti-Coat (Opti-Guard) is a hard wearing, aftermarket, ceramic clear coat for superior resistance to scratching (9H) - regarding to Opti-Coat Australia website, but this is what I don’t understand if the Opti-Coat is so hard why just an ordinary bush branch can scratch it?
The window glass is about 5.5 and if we do the same ‘bush branch’ test on it, you won’t find any scratches at all. I am sorry but this doesn’t make a sense to me.
To whom are interested to find out more about Mohs scale of mineral hardness visit Wikipedia website Mohs scale of mineral hardness - Wikipedia, the free encyclopedia
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