Improving the Pencil as a Marking Tool
All you need for this tip is a pencil and a stationary belt sander. Begin by sharpening the pencil as usual, then remove one side at an angle on the sander to produce a flat side — maybe 2 in. long — and a very sharp point. The extra step takes only a few seconds. Now you can hold your pencil flat and steady against a square or rule to produce a very close, sharp line.
Drawings by Jim Richey.