Jacks update

Another hiatus from the project just wrapped up and I'm back at work. I ended up modifying my jack design slightly, as I was not able to control the backwards pivoting of the tongue to my satisfaction on the prototypes I made to date. In the bass, the tongue would bounce off the string behind it as the jack descended, due to the large amplitude of the vibrating string.

I now have the tongue flush with the front of the jack, instead of set into the middle of the jack's thickness. With this configuration, the base of the tongue tilts outward and touches the side of the register slot in front of the jack. This stops the tongue from moving too far back. All the other properties of the jack have been preserved, so I'm satisfied.

As of today, I have drilled the axle holes through all the jacks and tongues and routed the grooves for the springs. I'll continue with reaming the tongue holes and cutting brass shim stock for the springs.