Build a labeled wood-sample library

Collect samples with reliable identities

A sample library is useful only when its labels are trustworthy. Start with offcuts from purchases whose species or product description you know. Mark uncertain pieces as unknown rather than guessing from color. Different boards of the same species can look surprisingly different.

Make the samples a consistent size where practical, such as 100 × 70 mm, while allowing thickness to vary. Keep a representative face, edge, and end visible. This collection is a learning aid, not a certification system for identifying every wood encountered later.

• Samples: known clean offcuts, approximately 100 × 70 mm.
• Holder base: 250 × 120 × 9 mm plywood.
• Front and back: two 250 × 40 × 9 mm panels.
• Ends: two 102 × 40 × 9 mm panels.

Label before the pieces become anonymous

Write an identifier on the back of each sample before cutting it free from a known board. Record the supplier description, date acquired, and any useful notes about grain or surface preparation. Keep factual observations separate from assumptions.

For sheet goods, record the panel type and measured thickness rather than simply writing “plywood.” For solid wood, note whether the sample is unfinished. A coating can change color enough to make a comparison misleading. Do not include scraps with unknown coatings, preservatives, or contamination in an ordinary handling collection.

Build an open reference tray

The holder’s 9 mm walls give an inside opening of 232 × 102 mm. Samples can stand with their 100 mm edge across the depth, leaving their 70 mm dimension upright like index cards. Check the actual sample orientation before assembly.

Sand the interior surfaces, dry-fit the walls, and glue them to the base with a suitable adhesive. Keep the front low enough that labels remain visible. Add a loose spacer behind a small collection so the samples do not fall flat. Avoid permanent dividers until you know how the library will grow.

Use comparisons carefully

Compare samples in the same light and orientation. Look at grain direction, pore pattern, weight in the hand, and the difference between face and end grain. Do not rely on color alone, and avoid making unsupported claims about strength or outdoor durability from appearance.

Smooth sharp edges so the samples can be handled comfortably. Store them dry and keep labels legible. If a sample loses its identity, mark that uncertainty instead of transferring a confident label from a similar-looking neighbor.