End mill sharpening fixture

I'm nearing completion on this project , not a lot left now . All that's left is the nut to hold the sleeve in the bottom plate and the one for tightening the collet , plus I still need to drill/mill the index dimples in the collet holder . That completes the fixture , then I need to machine a means to hold the grinding wheel . Could go with a dedicated mandrel , could machine washers/plates to use one of the mandrels I already have . Snag "You can lead a dummy to facts but you can't make him think."

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The collet tightening nut on my commercial fixture has a hex hole for an Allen wrench. The collet nut I made which accepts an insert to center an S&D drill bit shank has four radial slots that fit a dog-type wrench, as that was simpler to machine, although I have cut internal hexes by using a lathe as a shaper. The wrench handle is a V of 3/16" welding rod with the ends bent inward to fit holes in the OD of the wrench.

Since it's small I made it look nice to add to the samples I took to job interviews. At lunch today I was chatting with a retired HR manager and showed her some. She agreed that they were more convincing than anything I could write on a resume, since they were physical proof instead of questionable claims. Similar goodies got me into Segway.

The wheel I selected is a 6" meant for grinding carbide saw blade teeth ... and it has the 1 1/4" hole . The most rigid mandrel I have is the one that came with my lathe with a 1/8" slitting blade on it . I don't think the loads are going to be all that great ... but since I've got lots of stock and plenty of time I'll probably make a dedicated mandrel for this task . Short and stubby and very very rigid .