We put it on 3 different chalk lines including DeWalt, and the chalk wouldn't stick to the string. The chalk is too dry and needs to be more like the Stanley Extreme Black chalk as it seems to be more oily.
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Customer review from homedepot.ca
Oct 18, 2016
Chalk
Did the job! Was able to strike lines and still use the next day if no rain!
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Recommended
Oct 17, 2016
how clean it??
How clean it Unwanted lines???? It is good for permanent line but i need to know how clean or what product use??!!!