Whether it’s a knothole, a torn-out drill hole or routed wood damage due to wood rot: If you want to fill holes in wood, you should take care to avoid air pockets. We show you why and how to ‘butter’ DRY FLEX® / BIO FLEX™ into every corner of the repair area at the beginning of the repair to avoid air pockets. Use our EASY-Q™ Buttering Knife when buttering using our resins. The repair can then be easily sawn or drilled, for example.