Another way to make this clamping form is to route a groove slightly back from the edge of the form. While this may not provide as secure a clamping point as the additional strip of form, it may be easier and quicker to produce.

> It is a pretty simple process. She cuts half-inch plywood about a
> half-inch thick to match the forms. This is glued to the forms to create a
> lip so that spring clamps can hold the strip in place while the glue
> dries. Be sure to put the strip on the side of form facing the center
> form.