The cuts in the tang are all done freehand with a Dremel, roughed in with a reinforced cutting disc and then ground with cheap carbide bits. For the disc cuts I clamp the blade down or put it in a vise, and keep a wet paper towel handy to cool the blade regularly. I used my 2x72 a little bit on this, but most of the spots on this were hard to grind on that because of the shape. The lock cut was finished out using a flat diamond needle file.
Here are some pictures of the blade in place with the show scale removed, and of the lock cut in the tang.
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