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A scroll saw is a small electric or pedal operated saw useful for cutting intricate curves where a Jigsaw or Coping Saw is not appropriate; for it can cause "curves with edges". It is somewhat similar to a Band Saw , but unlike band saws, where the sawblade is a continuous loop, scroll saws use sawblades similar to those used by coping saws and operate through a reciprocating up and down motion. There are many different brands of scrollsaws on the market today. Notable ones include Excalibur (made in , Dremel (Bosch) , Craftsman , Ryobi and others. There are different types of scroll saws. The most common design is the parallel arm in which a motor is attached near the back of the arms, and the two arms always remain parallel to each other. The '''C-arm''' has a solid "C" shape with the blade being mounted between the two ends of the "C". The '''parallel link''', used by Excalibur and DeWalt, has rods in the upper and lower arms that are "pushed" by the motor to move short (about 4 Inch es – 100 Millimetres – long) articulated arms and the end which hold the blade. The '''rigid arm''' scroll saw, which was very popular up until the 1970s, but is no longer made, has a single-piece cast iron frame. The blade is attached to a Pitman Arm on the bottom which pulls the blade down, and a Spring in the upper arm pulls the blade back up again. This resulted in a significant weakness in that tension on the blade changed with every stroke of the blade. Modern scroll saws are all "constant Tension " saws. Uncommon and larger industrial type scrollsaws, included spring or vacuum sprung scrollsaws, these variations didn't have arms. Instead they had the reciprocation mechanism at one end of the blade and a tension device on the other to return the push stroke, their advantage being the tension/spring device could be hung from the ceiling of a building and large parts that otherwise could not be cut on arm-style scrollsaws could be cut, eg. aircraft frames of the past. BLADES Scroll saw blades come in many different types. With the exception of blades made for very light duty saws, typical blades are five Inch es long. The major types are:
Blades come in many different sizes hello ranging from #10/0 for making jewelry (about the size of a coarse hair) to #12 which is like a small band saw blade. There is also a variation called Reverse Tooth blades. On Reverse Tooth blades, the bottom 3/4" of the teeth are reverse (point up). This helps to clean out the sawdust and also cleans up the tear-out on the under side of the wood. Reverse tooth blades are especially useful when cutting Softwood s, and plywood such as Baltic Birch plywood. SCROLLSAWING RESOURCES There is a scroll saw organization called the Scrollsaw Association of the World (SAW). Scroll saw magazines include: ''Scroll Saw Woodworking & Crafts'' and ''Creative Wood Works and Crafts''. There are also dozens of scrolling pattern books, and several companies which sell scrolling patterns. These can be located through the SAW website. There are also scrolling discussion groups on Yahoo Groups. Paragraphs are needed on; Intarsia , Fretwork , Compound Cutting , 3-D Cutting , Large Fretwork Clocks , Marquetry and Inlay and Antique Scroll Saws EXTERNAL LINKS
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