An accelerated, thermally controlled process of drying timber inside a sealed chamber (kiln) using regulated temperature, airflow, and relative humidity to reduce moisture content to precise levels.
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My Study Notes:
Target Moisture Content (MC): Typically dried to 6%–10% MC, making it ideal for indoor climate-controlled environments and modern heated homes.
Process Control: High temperatures kill off wood-boring insects, fungi, and larvae while setting the wood’s natural resins and sap.
Speed & Consistency: Provides uniform drying throughout the board thickness without relying on outdoor weather conditions.
Quick Beginner Takeaways:
Best for Indoor Builds: Because it matches indoor relative humidity, kiln-dried timber minimizes the risk of shrinking or joint failure on furniture, cabinetry, and indoor joinery.
Internal Stress (Case-Hardening): Rapid drying can sometimes lock in internal tension; boards may bow or snap slightly when ripped down the center.
Working properties: The high heat makes wood fibers stiffer and slightly more brittle—ideal for clean power tool milling, but requires razor-sharp hand tools to avoid grain tear-out.
