Kondia FV-1 Head disassembly

[PixMan]

I do see one other reason why I like a 5C collet block: The collet "nose" isn't larger than the block.

This feature allows the collet block and workpiece to be held in the middle of the vise jaws where the force won't shift the movable jaw to one side or the other. The ER style has a nut much larger than the collets so you can't as easily get it in the middle of the jaws. A parallel spacer on either side of the hex/square of the block solves that.

The cutter in use is perfect for the application, and looks vaguely familiar.