Delta has returned to its heritage of scroll saw woodworking machines with the new 20" Variable Speed Scroll Saw (model 40-690). With electronic variable speed and upfront controls, the woodworking craftsman and hobbyist will find greater accuracy and ease of use compared to other scroll saws currently available. Delta ensures a measure of precision with a dual parallel-link arm design that keeps the blade perpendicular to the table. This reduces vibration and noise while also improving accuracy in comparison to previous models. The electronic variable speed can be adjusted from 400 to 1,750 strokes per minute (SPM) to provide optimal speed control for a wide array of cutting applications, and woodworkers now have quick and easy access to the on/off switch, speed control and blade tensioning lever with upfront controls.