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Rose Engine Cutter for Fixed Tool Work |
Edge Angle
Sharpen the edge to an exactly correct angle is not usually critical. Rather, the overall shape of the cutting profile (as viewed from the top) is more key.
Sharpening with lapping compounds of 6, 3, 2, and finally 1 micron are recommended. Additional honing information is in the Notes & Comments section below.
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The artist making pieces with fixed tools on a rose engine has the vision to see the angel inside the wood, and the skills to set her free. Rich Colvin |
Some historical information about sharpening these is available on the Ornamental Turning Book of Knowledge.
Angles shown are those recommended by John Jacob Holtzapffel in Turning and Mechanical Manipulation, vol. 5.
Example icon
Sharpness scales (as shown in the grey icon to the left) are used to indicate the recommended sharpness for the blades noted above. You can click on any of the icons showing the sharpness scale and be redirected to the page describing this more. Lower numbers are duller; higher numbers sharper.
These are general recommendations; you will need to use your own judgment, based on the knive’s intended purpose.