The best scroll saw patterns will depend on what it is that you want to make with your scroll saw. You should choose plans based on your needs as well as your ability level, as some scroll saw patterns are more difficult than others. The best patterns will also depend on the type of scroll saw blade you are using, as thicker blades will often not be able to handle tight turns. Pin-end blades are usually thicker than flat-end blades, so if you have a pin-end blade, you will probably want to choose a more open design.
Beginners should choose scroll saw patterns that are easy to complete and feature few inside cuts that will require drilling. A simple puzzle, for example, is a good place to start for a beginner. The cuts will be larger and less detailed, which will allow you to get a feel for the cutting process and the power of the tool. As your skills develop, you can choose scroll saw patterns with finer cuts, inside cuts, and other more challenging features. It is often best to start with softer woods, since these are easier to cut and do not require as thick and rigid of a blade.
The intermediate scroll saw user can look at plans that will push his or her skills. Finer cuts, sharper curves, inside cuts, and other techniques will need to be used on more advanced scroll saw patterns, which will require patience and practice. You will also need a varied stock of blades to accommodate the different types of cuts you will be making. Some toys, decorative pieces, and even furniture will be appropriate scroll saw patterns at this skill level, though you should expect to require some practice before perfecting the pattern. Try using the pattern on a scrap piece of wood first to avoid ruining a good piece of wood.
Many people choose to glue the scroll saw patterns to the wood when cutting to allow easier guiding through the process. If you do this, make sure the paper on which the design is drawn is thick enough to be glued without tearing or warping. Once the pattern has been cut, the paper will need to be pulled off, which means it is important to use glue that will not adhere so severely that sanding will be necessary. The pattern itself should be thick enough to be seen when being worked in the scroll saw.