The Carter Minimach Vacuum System is a portable, self-adjusting vacuum bed that harnesses the power of a wet/dry vacuum to hold work down securely. When the system is activated, its gasketed underside grips the surface of the workbench, providing a stable surface. The top surface uses 12 vacuum cells, each containing a self-activating suction valve, to anchor any flat work piece from 4" x 4" to 4' x 4'. When you're done with the vacuum system, its control tap releases the work in an instant.