How to Apply Gesso Over Wood
- 1). Cover your work surface with newspaper to protect it from damage. Put the wood on top of the newspaper.
- 2). Open the can of gesso, and using the putty knife apply a thin coat. Run the short knap roller over the surface to even out the base. Allow it to dry overnight.
- 3). Sand the gesso slightly with the sanding mesh to even up the surface again. Apply a second coat of gesso with the putty knife, then smooth it out with the short knap roller. Allow it to dry for 3 to 7 days, waiting longer in cool and damp regions.
Source...