Anyone know a tool or trick to cut insulated wire completely through?

I found that if you cut small and medium braided insulated wire all the way through it is a breeze seperating the copper from insulation.
Basically cutting it into half instead of just slicing the insulation, the copper inside falls just out.
Super quick and easy to process lesser size braided wire.
I tried running it through twice upside down, but that does not work as the wire twists and it is just a big ole mess.

So again, does anyone have an idea or tool that could do this more or less automatic? Maybe with a drill attached or so?
I found that any stripping machines out there do not let me set the blade tight enough to cut it all the way.
I got way too much wire to do it manually.
But nowhere near enough to get a grinder.
TIA
Martin

Finding something sharp to cut with that don't wear out is the trick, and holding the wire securely.

That's why the BIG guys grind it up and separate the wire from the insulation.

There are copper separating machine, saw one on youtube awesome to watch