I wonder if I could get your thoughts on sharpening and mills / slot mills.
I have a Clarkson tool and cutter grinder. I have been learning to sharpen my blunt end mills.
Some people say sharpen the end only (which is reasonably easy …now).
But I notice my mills will normally be cutting in a horizontal plane. This suggests the bulk of the cutting is made by that small part of the fluted side next to the end.
If my observation holds water then any sharpening would need to be both end and flutes.
What do others think please?
Also can anyone advise the best angle to relieve the end cutters, not the 5 degree angle but the one the raises the cutters outside edge over the centre. I have been using 2.5 degrees, but not sure this is enough.
Many thanks
John