Technical Drawing and Sketching, Continued
Sharpening
your sketch
pencils
To maintain uniform pencil width and pinpoint accuracy, you should sharpen
your pencil lead to a conical point.
Standard office pencil sharpeners are fine
for keeping the lead pointed. Also available are sharpeners that remove only
the wooden encasement surrounding the graphite lead. These sharpeners
require you to shape the lead by dragging the lead across a sandpaper pad
while rotating the pencil simultaneously between your thumb and forefinger.
For detailed instructions on sharpening pencil leads, see DM, Volume I,
chapter 1.
Figure 4-4 shows how to point the pencil lead.
Figure 4-4.—Sharpening a pencil.
Continued on next page
4-6
