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FWIW, ChrisL turned me on to Tools For Working Wood when they had a run of 8x1 1/2 Norton single grits in 1,4, and 8k for sale and I bought a set. If you cut those leaving one side a full 1 1/2...

Philadelph cut one or more lengthwise and so did ChrisL. Here is a thread on Alex's and here is one on Chris's. A water saw would be the way to go if you could find one. One way or the other, watch...