Coil Jig for different rod sizes

This is a coil Jig design enhancement. You can create coils of Kanthal or Nickle wire easily with this jig.

Insert a M3 machine screw in one of the holes for the wire guage size on one cylinder.
Insert the center smooth rod, and fix it with grub screw on the other cylinder.
Insert wire thru the hole opening next to the rod. Hold the end of wire (that comes out of the cylinder) with your thumb, and rotate it once around the center smooth rod to start the coil.
Insert the protruding cente