Tutorial

Photo Gallery

List of Defects

Links

Site Index

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• Contained within these pages you will find hundreds of photographs of defect found in North American hardwood species. By familiarizing yourself with the information presented here you will gain a better understanding of the major types of defects found in hardwood trees. You will learn not only how to identify them, but how to circumvent their degrading effects. Slide shows, photos, and descriptions are provided that will enable you to view defects from not only their surface position, but also within the sawtimber log. Allowing you to see for yourself how they affect the quality of the underlying wood.

Tutorial

• The tutorial is a guided method of experiencing the information found within this defect trainer. It reinforces key concepts concerning hardwood defects that commonly exist in North American hardwood forest. Identification and causes of defects as well as the impact they have on wood quality are covered. A tutorial quiz is provided. Click here to see a Site Map of the tutorial.

Photo Gallery

• The photo gallery provides visual aids for recognizing a defect. You may click on the name of the defect to learn more. It is important to remember that all defects are unique. Several defect may appear similar on the surface, but subtle clues can indicate radically different effects in the underlying wood.

List of Defects

• This portion of the trainer divides hardwood defects into log-end defects and surface defects. By clicking on the name of the defect, you will see photos of the defects and learn more about each defect and how it affects timber quality.

Links

• This page is designed to provide additional information concerning hardwood defects and other data regarding the forestry realm as a whole. Our contributors and those who assisted in this defect trainer program are also listed.