I picked a Dremel Moto Jigsaw up at Arnfest 2013. It appears to work. It is very small, light duty. On owwwm org / vintagemachinery com they have a manual for a Dremel 57-2. Mine does not have the connector on the motor to allow for the attachments. If any one here has a manual or thinks they do, please let me know.
Mike in Ohio hilliardman1965 yahoo