This series shows the steps
for making a new falt index spring for a vintage wrist chronograph.
This is another example of what has to be done when a piece has been
mishandled. Most parts do break from wear or usage, they are
broken from rough handling when removed from the case.
may seem odd, but I do use superglue in watchmaking. As shown
below, I use it when I can use the old part as a template for cutting
out the new piece. I also use superglue to hold small parts on
larger steel plates that can be held in the magnetic chuck on the
surface grinder. However, superglue has no place in timepiece
is the filed index spring being fitted for trial. You can see the
old foot provided me with a jig for drilling the steady pin and screw clearance
holes in the new spring's mounting foot.
the fits before hardening.
hardening, tempering and polishing, the piece is now fitted to the