Auxiliary Planer Bed
I use a piece of 3/4-in. plywood over the bed of my thickness planer when I plane thin boards, to avoid lowering the head so tightly. This fixture also reduces snipe. Attaching a stop block to the underside of the fixture will prevent it from moving through the planer. For better wear and reduced friction, you could also make the fixture from melamine.
Omar Showalter, Harrisonburg, Va.
Fine Woodworking Magazine, February 1999 No. 134