Status : Book Study

Wood seasoned naturally outdoors over time rather than in a heated kiln. It is generally softer, easier to plane with hand tools, and preserves rich natural colours.

My Study Notes

Outdoor Equilibrium Limit: Air-drying only lowers moisture content to ambient outdoor levels (12%–18% MC in the UK), meaning boards must still acclimatise indoors before being used for heated indoor furniture.

Low Internal Stress: The slow, natural drying process creates less tension in the wood fibers compared to kiln-drying, making the timber far less prone to case-hardening and significantly easier to work with hand tools.

Proper Stacking Is Crucial: Successful air-drying requires elevating the stack 300mm off the ground, placing aligned stickers between every layer for airflow, and shielding the top from rain while keeping the sides exposed to breeze.

Quick Beginner Takeaways

• For indoor furniture/joinery: Go for Kiln-Dried, but always let it rest in your shop/home for a few days to acclimatise before cutting.

• For outdoor projects, workbench builds, or practicing hand-tool joinery: Air-Dried is fantastic, usually cheaper, and more forgiving on your hand tools.

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