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- Jun 7, 2013
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- 10,145
The tool that I use for roughing on the shaper has a large radius on the cutting face, culminating in a small radius at the point, then continuing back to a large radius on the backside, then having a generous side rake on top. This is the sort of tool that F.W. Taylor determined to be the most efficient tool for removing metal, whether for lathe, shaper, planer or whatever. He published a summary of his work in 1897 or 1898, titled "on the art of cutting metals", it has diagrams of the tool shapes, this after 26 years of experimentation under the patronage of William Sellers.