I use Bullseye spray shellac. If you are gonna do a lot of wood a quart of brush on shellac would be cheaper but has a shelf life. Even when I debark cured whitewood or chase a ring on osage, mulberry, locust, et al, I spray the back and ends. It takes 2 minutes, dries in 10 min or less and seals well. You can remove it with light scraping, sanding or wipe it well with alcohol. It will stick to anything and you could seal over it with almost everything. Pat