End mill sharpening

[oak]

I have a 5C end mill grinding fixture (MCS#09465014). It does a great job on 2 or 4 flute cutters. If you have a surface grinder and a vertical mill you need one of these.
Markings on the fixture indicate that it can also be used on 6,8 & 12 flute cutters. So far I have not figured out how that can be done without buggering ajacent edges. Would somebody please put me on the right path?

 

[TDHofstetter]

I'm going to watch this thread, because the only way I can think to get that job done would be to follow the flute lip in toward the center, face-grinding on a very small wheel to keep the grinding scratches perpendicular to the lips. If you edge-grind along the lips, the grinding scratches will be parallel to the lips - not a good thing, since it weakens the cutting edge... and you can't reach center that way.

 

[Syaminab]

I have a 5C end mill grinding fixture (MCS#09465014). It does a great job on 2 or 4 flute cutters. If you have a surface grinder and a vertical mill you need one of these.
Markings on the fixture indicate that it can also be used on 6,8 & 12 flute cutters. So far I have not figured out how that can be done without buggering ajacent edges. Would somebody please put me on the right path?

Size of wheel perhaps?