[Phlogiston]

Steve

I guess the questions about the metal portion are there to make sure it does not affect the tuning frequency. Though in my experience with IF cans regular metal screwdriver with insulated handle didn't. However with tuning trimmers on the tuning cap it did.

One good tool people would appreciate is that one used to align ARMCO slugs in coils like in Transoceanic radios. It is finicky. Should fit exactly or it will break the slug, and should be non-magnetic and preferably non-metal.
The existing tools are flimsy and if the core is stuck, the narrow diameter of the shaft does not allow to apply good torque plus it could twist/break.

Yes, on both statements.

To be even clearer - is any part of the shaft metal besides the end?