10-17-2018, 07:24 PM
(This post was last modified: 10-17-2018, 11:09 PM by KnifeGrinders.)
Mike, thank you so much.
We know that the edge properties do change during grinding, we know that the mechanical component is always contributing, and your tests are to show whether the annealing ("detempering") component can be nulled by careful grinding.
Would you be able to repeat the same test on a finer grit belt or a buffing wheel?
It's a common knowledge that coarse grits grind cool.
For this reason, for example, grinding paper wheel is not made finer than #180, because with finer than 180 grit not enough grease and air get between the abrasive grains to cool the edge you sharpen, and it burns.
The majority of sharpeners deburr using near 5 micron compounds, i.e. JIS #3000 or ANSI #1500.
For completeness, would be great to also test JIS#1000 or ANSI 600-800, as this grit is common in fine grinding.
If you see no heat produced by that fine grit abrasives in your testing, the results will become conclusive for the whole of the practical range of grits.
For protocol, what is the belt speed in your experiment?
I assume you don't observe sparking while grinding? Or do?
We know that the edge properties do change during grinding, we know that the mechanical component is always contributing, and your tests are to show whether the annealing ("detempering") component can be nulled by careful grinding.
Would you be able to repeat the same test on a finer grit belt or a buffing wheel?
It's a common knowledge that coarse grits grind cool.
For this reason, for example, grinding paper wheel is not made finer than #180, because with finer than 180 grit not enough grease and air get between the abrasive grains to cool the edge you sharpen, and it burns.
The majority of sharpeners deburr using near 5 micron compounds, i.e. JIS #3000 or ANSI #1500.
For completeness, would be great to also test JIS#1000 or ANSI 600-800, as this grit is common in fine grinding.
If you see no heat produced by that fine grit abrasives in your testing, the results will become conclusive for the whole of the practical range of grits.
For protocol, what is the belt speed in your experiment?
I assume you don't observe sparking while grinding? Or do?
http://knifeGrinders.com.au