I worked nights in a nonmagnetic shack doing testing of sensors. The test was boring and took a long time so I would find diversions. One was going into a desk and getting a new pencil and bouncing it off the wall eraser end. I got real good at it. Sort of like knife throwing but safer. Anyway one day the day guy remarks that the pencils we buy are no good because when he goes to sharpen them the lead falls apart. LOL, the banging against the wall was shattering the graphite.
I worked nights in a nonmagnetic shack doing testing of sensors. The test was boring and took a long time so I would find diversions. One was going into a desk and getting a new pencil and bouncing it off the wall eraser end. I got real good at it. Sort of like knife throwing but safer. Anyway one day the day guy remarks that the pencils we buy are no good because when he goes to sharpen them the lead falls apart. LOL, the banging against the wall was shattering the graphite.