How to Bend Wood
How to Bend WoodAuthor: Grant Campbell Bending wood is not the daunting task that it appears to be at first glance. Depending on the degree of bend, and whether or not the bend is compound, there are a couple of methods for bending wood. First, you need to have a form to bend your wood around and clamp to to hold thedesired shape. Most bent wood will have a certain degree of “springback”, so you must build your form with an allowance for this. And, unfortunately, there is no established formula for determining the degree of springback that a given species of wood will produce. Springback is also influenced by the bending method used. That is to say that steamed wood will spring, or “unbend” more than wood that is laminated and glued.
Another variable is the type of glue used in laminating. As a general rule, the tighter the bend, the more the wood will spring back, making the allowance a matter of trial and error at best. As laminating thin strips is the easiest method, we’ll begin with that process. The finished thickness of the project will have a direct bearing on the size of the strips to be used, but generally, the heaviest strip to use is about ” thick. Tight bends may have to be done with 1/8” strips or thinner, depending on the wood species.
Sounds like a lot of experimenting, but I’m afraid that’s a necessary evil. The form required for laminating can be as simple as a piece of pipe or as complex as a multi-station die.
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