This photo show the thumb grip serrations being milled. The thumb ramp on the Curr blade is curved, so each groove must be milled in at a slightly different depth, hence the dial indicator.
Here's the Curr blades ready for heat treat. Thumb serrations applied, pivot hole opened up and reamed to .250 and hold down hole ground off.
Next will be the finalized onlay, frame holes, etc., backspacers and lathe parts. Stay tuned!