I've previously posted a technique used for holding small, or difficult objects. It can be used for any size however.

The photos shows our favorite foam adhesive and the despencer. It's from Deman Products. The can has lasted me about a year. It costs about $15.00.

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Here's the way I do it.

Use a scrap substrate like MDO, Melomine, Plex or just about anything, on which you can place your "To Be" routed material. Go around the side of your routing material with the foam. Not underneath. This sets up in about 10 minutes. Now just screw or clamp the larger substrate to the router bed.

When finished routing, you can go around the sides with a putty knife and along the bottom to relieve it. Don't worry about this stuff giving up the Ghost. It's really tough.

Joe