The most common design is the parallel arm, which is the type you typically see in your local hardware store. There is also a scroll saw style, with two separate arms at the top and bottom of the ...

Scroll saw type is determined by its arm design. A scroll saw’s arm holds the blade. There are three main types of scroll saw arm designs in use today: C-type, parallel, and parallel-linked.

but what about adding computer control to other types of saws? [Andrew Consroe] recently put together a postmortem video about this experimental CNC scroll saw. While he never quite got it working ...