Bending Wood

CUTTING INTO THE WOOD

• Between the pater you want to curve, mark the back of the timber beam for every 10mm

• Cut 90% deep so theres only a small part left still attached between each gap

• Can apply dry wall to it and you have a vertically curved wall

STEAM BENDING

• Another method to bend wood using steam to moisturize the wood and make the wood pliable like in a rubber state to bend around a mold. Then let it cool to harden again.

How does it work?

• Lignin Plasticization: Wood is held together by a natural polymer called lignin, which acts like glue.

• The Process: Exposing wood to hot, non-pressurized steam softens the lignin. This allows the wood fibers to slip and compress without breaking.

• Cooling: Once bent, the wood cools, the lignin hardens again, and the piece holds its new shape.

Step-by-Step

Prepare the Box: Heat your steam generator until it produces a steady, continuous flow of steam. Allow the chamber to preheat for about 30 minutes before putting your wood inside

Steam the Wood: A general rule of thumb is to steam the wood for one hour per inch of thickness

Bend Quickly: Once the time is up, carefully remove the wood (use heat-resistant gloves!) and quickly pull it around your bending form or jig. You generally have about one to two minutes before the wood cools and loses its pliability.

Use a Strap: For tight bends, apply a metal tension strap to the outside of the curve. This supports the fibers and prevents the wood from splintering or "blowing out"

Clamp & Cure: Clamp the wood securely against your form and leave it to cool and dry completely, typically overnight.