I used a 5/16" end mill in a drill press and a 15° jig I made with a fairly precise miter saw to make this. I measured it with a protractor, and it's actually a little closer to 15° per side than the Turn Box's holes are to 25° and 20° per side. So, I guess I did all right.
Here's the final rig:
And here is the 15° jig I made on the miter saw:
I've used it to very slightly reprofile and touch up a few AUS8 knives so far, and it works great.
Here's the final rig:
And here is the 15° jig I made on the miter saw:
I've used it to very slightly reprofile and touch up a few AUS8 knives so far, and it works great.