I bought a Delta Disc Sander to use on some segmented work. I am in the process of building the sanding sled Curt Theobald shows in his video. The machine came with a disc already installed. When I removed the disc so I can start the sled, adhesive stayed on the metal plate.

What's the best way to remove the excess adhesive? The small grooves in the plate make it impossible to use a razor efficiently. Any help would be appreciated.

John