| Forum topic by JohnChung | posted 180 days ago | 380 views | 0 times favorited | 1 reply | ![]() |
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180 days ago |
We all use a pencil for marking lines :) There is a new use for a pencil. To identify the coating or to narrow it down at least. http://www.pencilpages.com/articles/simmons.htm. At least we can now evaluate the hardness of the coating consistently |













