Mr. Grepper, you are correct, the flash heating leading to flash temperatures occurs at the microscopic scale.
When the heat pulses are not very frequent (light touch sharpening) then they will not heat up the whole edge – grindstone contact area and will cause no macroscopically measurable changes of edge hardness.
The open question for me is whether on the microscopic scale some tiny edge defects, caused by the flash temperatures, exists?
Jan
When the heat pulses are not very frequent (light touch sharpening) then they will not heat up the whole edge – grindstone contact area and will cause no macroscopically measurable changes of edge hardness.
The open question for me is whether on the microscopic scale some tiny edge defects, caused by the flash temperatures, exists?
Jan