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Scratch mark – a cavity that traps dirt

By SYF77 on 30 Dec 2011

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My car has a deep scratch mark on the bonnet for almost a year. Recently, the unsightly mark seemed to become more obvious as it darkens in color and makes a stark difference against the white paintwork. I believed it is due to dirt accumulating in the cavity, just like how food remains get trapped in our tooth cavity.

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Since it was Christmas day and I was idling at home, I decide to do a little experiment with a bottle of liquid clay bar that I bought some time ago. The liquid clay bar is supposed to be a deep cleanser that removes embedded dirt. It has a 3 layer system that contains a stain remover, wash and special clay compound according to the label on the bottle.
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After giving the content in the bottle a good shake, I poured a small amount of the mixture onto the sponge and gently rubbed over the scratch mark. To my pleasant surprise, the scratch mark lightens up in shade. I proceed to wash away the mixture on the paintwork with clean water. After drying up the surface with a cloth, I applied a layer of wax to protect the surface as the clay compound will strip the any sealant that was applied before.

Below is the outcome after a 10 minutes’ work. Although the scratch mark is visible under closer inspection, it is far less obvious than before. I was pleased to have done something purposeful on a Christmas afternoon.
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SYF77
Written by SYF77
I have been a car fanatic since 1989, when my father was changing our family car then to a Toyota Corolla 1.6 GL fitted with a Twin Cam 16 valve engine that was carburetor-fed, a big deal back in those days. The automobile technology and industry fascinates me and I hope to broadcast these interesting developments to everyone out there through this blog.



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Darklord_88 Dec 31 2011 02:41 AM
why dun you use autogylm sratch remover? just apply and wipe..take less than 10 seconds
SYF77 Dec 31 2011 09:16 AM
Thanks for recommendation. I did try Turtle Wax deep scratch remover but the scratch is too deep to be effective. According the a few workshops that I've consulted, if you run a finger over it and can feel the scratch mark, the only way out is to respray.
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