Wood is a sturdy but pliable material that expands and contracts constantly- making sure your dowel is fitted perfectly with the correct bit can increase the longevity of your windows and doors and minimize the effect of harmful loosening or weakening over time. For perfect results every time, consider a Dowel Glue Nozzle for your Pizzi gluing system that will complete your dowel system and ensure your dowel gluing is precise, perfectly fitted, and minimizes wasted time and glue.