Spray a scrap piece of wood with a spray lubricant.
Attach the scrap piece of wood to the broken area using a clamp. The board supports the wood as the putty dries.
Mix together the wood putty resin according to the instruction in the packaging. The two-part wood putty hardens only when the two parts are mixed together.
Apply the putty to the wood with a putty knife. Fill any gaps, trying to make the putty as flush to the surface of the wood as possible.
Cut the wood filler flush to the wood using a utility knife once the putty has dried for the recommended amount of time.
Remove the wood board support.
Shape the wood putty using a piece of sandpaper.