Talk:Marking blue

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[edit] Engineer's blue

Is'nt this the same as engineer's blue. mabey they should be merged.

No, marking blue is made by mixng prussian blue with methanol, while engineer's blue is made with prussian blue and oil. Marking blue dries, while engineer's blue doesn't. They are also used for different purposes. --71.227.190.111 00:19, 17 August 2006 (UTC)