Often a project can go well except for one thing. A single screw, for example, that doesn't want to go in, or time wasted constantly changing drill bits, can hang up an otherwise perfect project. Investing in specialty tools like those shown here can solve typical problems to help get jobs done right with less time and effort.
If your wood gluing work is less than successful, check your blades. If the blade in your saw is getting dull, it can loosen (but not remove) a layer of fibers on the edges to be joined. Later, glue may not be able to penetrate through this debris to solid wood, resulting in weak joints. A signal that this may be the problem is if ruptured joints are coated with fibers.