Craft · 6 pages · 12 min

Why the bend must be held while it cools and dries

A steamed bend springs back unless it stays on the form until the lignin cools and the wood dries.

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From the opening

A piece just pulled from the steam is hot, wet, and only temporarily flexible. If it leaves the form in that state it moves back toward straight, so the bend has to be held while it cools and while the extra moisture leaves. The opening covers hot wood still wants to spring, cooling stiffens the lignin, and drying locks the moved fibers.

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Inside

Hot wood still wants to spring
Cooling stiffens the lignin
Drying locks the moved fibers
A warm release opens the curve
Where the idea stops applying
A distinction worth keeping

Sources

Spring-back in steam-bent wood
Cooling forms for bentwood

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Why the bend must be held while it cools and dries

From the opening

Inside

Sources

Also on the desk