I belive the reason for using a surface grinder is because the op has to run the cutters at high rpm for them to cut wood and horizontal mills are usually pretty limited in that department. I imagine the cutting loads will be very small so I don't see a reason you couldn't use a smaller spindle and a bushing to adapt the cutter. High speed spindles are readily available and you can get pretty decent Chinese ones for a few hundred bucks, then you could convert pretty much any old mill or grinder to suit your needs. Tool and cutter grinders are usually pretty cheap and the small table size should not be an issue, right?
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