Use a piece of wood to determine the actual curve to be used to create your form.
Using the bent wood as a guide, transfer the curve to your bench with a pencil.
The curve is extended into the straight sections which will be included in the form.
The curve is transferred with tracing paper to a substrate onto which the form will be built. I used a scratch awl to pierce the points along the pencil line. I can then 'connect the dots' left on the substrate to recreate the shape of the form.
Blocks and pegs are located in appropriate positions along the line to achieve the desired curve. After some testing, all necessary clamps, glue, wedges and blocks are gathered and organized so the glue up process is as efficient as possible. Notice the shellac applied to the form so the workpiece is not accidentally glued to the form.
The glue-up process complete. Bent laminations need to be left to sit for at least twelve hours so the glue can set completely. It is the rigidity of the glue that allows the bent wood to hold it's shape.
Trying out the prototype for desired results. It works!
When milling up solid wood for bent laminations, carefully mark the ends. This allows the laminates to be re-organized into the order in which they were sawn. This step will result in a product that is almost indistinguishable from a solid bent piece of wood.
The second round of glue-ups, this time using sections of PVC pipe for clamps along the curve.