Look over the top of the wood piece for any uneven spots or damage, including splinters and rough spots. Sand the area with coarse-grit sandpaper, which removes the damage, while roughening up the surface for gluing. Rub the sandpaper with the natural grit of the wood.
Cover the wood surface with a two-part epoxy glue. The glue comes with a resin and a hardener in separate bottles. Apply the resin part to the entire surface of the wood with a foam paintbrush. Apply a coat of hardener over the resin with a different foam paintbrush.
Place the stainless steel sheet directly on top of the wood. Carefully center the steel on the wood, lining up the edges of the steel with the edges of the wood. The epoxy takes two hours to dry, which gives you the chance to move the stainless steel into place before the glue sets.
Rub a paint roller across the top of the stainless steel, applying enough pressure that you smooth out any air pockets or bubbles trapped under the steel. Move the roller from left to right and then up and down across the steel.
Attach clamps to the edges of the steel, adhering it to the wood. Wipe a damp cloth over the edges of the steel, wiping off any glue that seeped out. Wait two hours for the glue to finish curing before removing the clamps.