This is a amazing product to fill any voids, cracks or natural cavities for your wood projects. This is a 2 part epoxy which comes in a 5 min set time. You will need to purchase the hardener 107. Pumps sold separately.

105 Epoxy Resin is the base material on which all WEST SYSTEM 105 System epoxy compounds are built.
Blended with hardener at the proper ratio, it cures to a hard, solid plastic with superior physical properties.
Forms a high-strength solid that is functionally waterproof, and highly resistant to moisture vapor.
This epoxy is a great coating material.