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Moisture Content and Distortion
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GOAL: To understand the effect of moisture content on wood, how boards sawn in different ways change differently in response to variations in humidity and how wood can distort as it dries.
The average moisture content of a newly felled tree can range from 75% to more than 200%. The desirable moisture content for furniture-making is 8% to 10%, so a lot of water must be removed before the boards will be suitable for working. This lesson will address the drying process and its effects on different types of boards, as well as the distortion that can result during drying. |
Shop Class Section 2 Chapter 8 Lesson 3
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