Wood glue is, like it sounds, used to adhere wood together, or to bond wood onto other materials. It is commonly used among woodworkers for carpentry or wood making projects. Wood glue is a general term for a large range of different forms of glue, which comes in different styles and is used for different kinds of woodworking. What is great about wood glue is that when dried, the glue becomes stronger than the wood itself. This is because wood is made up of fibers, which allows the glue to bond within the fibers in the wood, instead of just on top of the wood. Therefore, this creates a powerful and long-lasting bond.
Important to note:
The longer the glue remains in liquid form, the further it seeps into the wood, soaking into the fibers, creating a stronger bond. However, depending on how porous the wood is determines how far the glue can soak. A very porous or soft wood will allow for deeper saturation than a harder wood. However, there is still sufficient porosity in hard woods to create a firm enough bond.
It is crucial to be aware of the orientation of grain in wood before applying the glue. For a bond to adhere adequately and be strong enough to have lasting effects, the grain structure within two pieces of wood need to be aligned properly. Furthermore, mechanical assistance is often necessary to strengthen joints within the wood. Most commonly, mechanical assistance comes in the form of screws and nails, however splines and dowels work as well. Make sure to keep a careful eye on your wood as it dries. The key to a successful bond is consistent glue coverage. And although it may seem like an easy task, don’t forget that wood absorbs glue at different rates. While the glue is drying, keep an eye out for where it is absorbing faster into the wood and where it takes longer. You may want to add more glue in certain areas depending on the rate it soaks into the wood.
Exposure to certain environments and temperatures can greatly affect drying wood. Wood glues should be stored in temperatures of mid-low 50’s. Also, high levels of moisture within the wood can weaken the bond. Keep saw dust, oil, and wax away from drying wood, as these are strong contaminants! To remove glue, wipe away with a damp rag or paper towel before it dries. Or, wait until the glue has dried and then scrape away excess glue, or dried beads. After scraping or wiping away the glue, sandpaper is necessary to completely remove any remaining glue.