This I think would be great and feasable in someones's hands besides me. The edges can be notch cuts or even just burrs. The optional oblong hole in center would be a huge plus. If it could be drilled/cut in on a slant, even better. Rough is on our side here...at least for the extraction part & maybe the encapsulating also.
The wider the blade, the more balance issues. I tried to cut a flat blade small, CHEAP screwdriver down to shorten but even the crappy tool was too hard for a dull hacksaw, which is all I had. ..Well I might be able to cut it with the Dremel...in an hour lol.