This scoop is actually my Vicmark vm120 body with wood jaws mounted to the body.
The jaws are made from an 8″ by 8″ by 1/2″ piece of Baltic birch plywood(the good stuff). The standard jaws were used as templates to mark bolt holes. The holes were then counter sunk and stabilized with thin CA glue.
The jaws are attached with bolts a little longer than the standard bolts to allow for the additional thickness of my plywood.
On top of the plywood, I glued 2″ thick cedar since that is what I had available. The wood can be anything stable and readily available. This wood is miter cut similar to a picture frame, drilled for outer bolt access, and glued to the plywood.
The jaws can now be customized to hold the current project.
For my scoop, I drilled out the center a little smaller than my scoop bowl and removed two opposing jaws.
When the time comes that I have removed too much of the jaws for my then current project, I can either make a new set of jaws or tool off the cedar and glue on new wood pieces.
As with any home made tool, please be careful and use your head. Start slow then increase speed to where you are comfortable then dial back a little. As with any home made tool, you are the sole person responsible for its safety and your own safety.