Sewing Machine Converted to Scroll Saw. I actually have a brand new machine with a decent motor but worthless in every way for sewing. But we will probably fabricate the parts we need out of metal- the epoxy idea is pretty lame.
I have wanted to build a shop made scroll saw for a long time. I haven't done so because with health problems, I didn't know if I could handle the type that you pedal or work a treadle. Then I ran across this design in an August 1986 copy of WOOD .
Assemble A Drill Powered Scroll Saw, Part 2 - Saw Arm Assembly - YouTube