Durable and flexible epoxy is the best way to restore crumbling woodwork
Andy Engel, TOHpro
Step 4: Blend the Resin and Hardener
Stahl pumps the two components of the epoxy filler—resin and hardener—onto a plastic board, then blends them thoroughly with a plastic putty knife. Epoxy doesn't stick to hard plastic surfaces, so the board and putty knife can be cleaned and reused.