|Microbevels front and back.|
|Use a jig.|
|Copyright (c) 2002-15, Brent Beach|
The fact that these questions get asked suggests that the answers are either not obvious, or that my answers are somewhat different from commonly held views.
A lot has changed since then, both with tools and with abrasives. Lee Valley and others have re-created the market for quality hand tools. Abrasives have come a long way as well - with advances in artificial stones (mainly water-stones) and diamond abrasives.
If that name seems familiar, it almost is. Henry was the son of Sorby family that owned Sorby and Sons of Sheffield. He was never active in the firm. We was only 18 when the firm which was sold in 1844. He did these experiments in 1863.
Sorby was trying to discover the structure of steel. Others had tried to smooth the steel surface and look at under a microscope. Sorby perfected the techniques of smoothing the metal sample. Having glued a slice of metal to a piece of glass, Sorby had the "surface made us flat as possible by rubbing on emery paper placed on a sheet of plate glass, using in the first case somewhat coarse, and finally the smoothest paper employed in preparing sled plates for engraving." Preparation involved other abrasives after the scary sharp step.
Emery in the 1860s was the naturally occurring mineral containing aluminum oxide and other compounds. Naturally occurring abrasives are not as uniform in grit size and shape as modern industrial abrasives.
Henry spent just a year discovering Metallography, then moved on to other challenges.
A big advantage of using only 3 abrasives, with a new microbevel for each abrasive, is that you can see when you are done with each abrasive. No need for a magnifier. You can see if the microbevel at each stage is the full width of the blade, right at the edge. The visual check for done for each abrasive is discussed in detail in the typical sharpening session page. The elapsed time on the three abrasives should be no more than 3 minutes, assuming the blade has been properly ground (down from Steve's 15 minutes). Watch the video of me honing a plane iron to see how long it takes.
If you buy cheap abrasives you will not get a good result. If you do not stick the abrasives down on the glass really well you will not get a good result. If you do not use a jig at all you will not get a good result. If you do not use microbevels as discussed here you will not get a great result. If you don't bring a well ground iron to the honing stage, you will not get a good result.
If you take the time
If not, not.
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