Better Glue Joints
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By Lonnie Birdpages 39-41From the November 2004 issue of Popular Woodworking Magazine Much of woodworking is joinery: An edge-to-edge joint is used to join two or more boards to create a tabletop, dovetails are carefully cut and fit to create a box for a chest of drawers.
And the corners of a door frame are joined with a mortise-and-tenon joint.However, whether it's a simple b*tt joint or a complex interlocking joint, glue is typically used to hold everything together.And if you've ever been asked to repair a piece of cheap, factory-made furniture (it's often called curb furniture - it's used for a few years and then set out on the curb) you'll see that it's typically the joint that has failed rather than the wood (assuming real wood was used).
Yet modern glue is strong stuff.In fact, try this experiment: Glue two inexpensive poplar boards together edge-to-edge with ordinary yellow glue and allow the glue to dry overnight.The next day break the boards apart and you'll find that the wood will break instead of the joint.
You see, when well-crafted, even a simple edge-to-edge joint is stronger than the surrounding wood.Interlocking joints, such as dovetails, and the mortise and tenon, are...