Sharpen the edge using a goniostat (or goneostat, if you prefer the Queen's English) to ensure the correct angle is maintained.
Sharpening with lapping compounds of 6, 3, 2, and finally 1 micron are recommended. The 1 micron paste should also used for resharpening via a micro bevel approach.
Additional honing information is in the Notes & Comments section below.
Some historical information about sharpening these is available on the Ornamental Turning Book of Knowledge.
|Hardwoods and Ivory-like Materials||60º - 65º||3º - 5º||This is recommended by Holtzapffel, but if the original angle is different, it is best to match that. Higher angles are recommended for reducing chatter in the cutting operation.|
|Metal||70º - 75º||3º - 5º|
Notes & Comments
The Accu-Finish machine has been used for years by machinists. These machines use diamond wheels, or a ceramic lapping wheel with a diamond spray. It is is a really great machine, especially as it has a built-in goniostat, but it can be a bit expensive.
The video to the left shows a demonstration of one that was given at the 2018 Ornamental Turners International Symposium.
I've found the Tormek grinder to meet my needs, though I did have to make some of my own jigs.
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