We've all been there. The perfect prototype sketch, marred by a pencil smudge. Fret not, here are four easy tips to help you keep your sketches clean and clear.
1. Use a brush to periodically wipe the lead away.
2. Drafting cleaning pads help.
3. After using pencils, ink your drawings, and then erase the pencil sketch.
4. Consider using harder lead.
From mechanical to old-school pencils, to each his/her own tools. We like this inside look at one artist's — graphite pencil artist Mike Sibley's — tools of the trade, including a rather unusual use of Blu-Tack in his process.