Yes, you can absolutely clear coat wood with DiamondFinish Clear.
If the wood is sealed, you will scuff sand any imperfections and wipe down with a mild solution of KBS Klean (1 Part KBS Klean to 25 Parts Water). Then proceed with the nice, thin coats of DiamondFinish Clear.
If the wood is raw and not sealed, wood surfaces should be smooth and dry with the wood having a low moisture content. Thin initial coat of DiamondFinish Clear 30-50% with KBS #1 Thinner and apply a single covering coat to seal the wood. Allow to cure 24 hours. The wood will generally need to be sanded smooth again as DiamondFinish Clear will tend to raise the wood grain with the first coat. Sand the surface smooth with fine grade of sandpaper (280-320). Apply at least an additional full coat for general applications and at least a minimum of three coats for marine or industrial users.
Please be sure to review the Complete DiamondFinish Clear Directions before you begin your project.