
Learn how wood grain direction and humidity drive movement, compare face grain, edge grain, and end grain, and plan glue ups to accommodate movement and prevent joints from cracking.
Explore wood strength through specific gravity, compression performance, and common issues like sag in long spans; learn about splintering risks and the reliability of glue joints in projects.
Introduction of your instructor, Bill Martin, and the layout of the courses next six modules.
Choose wood wisely for your project, understanding board feet, nominal versus actual sizes, and surfacing four sides, then plan cut lists and plywood options with extra material.
Explore wood anatomy and varieties—from pith, heartwood, sapwood, and cambium to hardwood, softwood, plywood, and MDF—along with green wood, glue joints, defects, strength, and buying tips for selecting wood.
This course is designed to give you, the student, a grasp of wood characteristics which will result in more attractiveness and structural integrity in all your future projects. You will learn:
- the five parts of a tree trunk and the two that are most serviceable
- how wood structure makes end grain gluing worthless
- how to read wood grain and why its important
- how wood grain relates to wood movement
- why reading wood grain is critical to proper planing direction
- about wood strength and how heavy loads are handled with wood in compression
- how to avoid boards with uncorrectable defects
- how to select good boards
- what species and types of wood are suitable for your projects
- to do a “cut list” to figure out how much wood to buy for a project
- characteristics of veneers, plywood, and marine plywood
- when it is necessary to use dimensionally stable material.