On 1/26/19 12:12 PM, rbowman wrote:
On 01/26/2019 10:47 AM, Stumpy wrote:


....


I don't know about lubrication but how does an art store graphite crayon
differ from a standard #1 'lead' pencil?

Come to think of it, I did use pencil graphite to lubricate the slide on
my slide rule back in the day.


Regular pencils use clay mixed in the graphite to harden them. I assume
the crayons will be more pure.