Question about side & face mill tooth geometry.

[Pete O]

Thanks for the replies. I also found a document that suggests a taper of approx .003 toward the hub, which is consistent with what the worn cutters seem to have.
Weather here is abysmal at present so I have an excuse to leave other tasks and faff around in the workshop for a bit, will see if I can make some progress on a simple sharpening jig.