11-10-2018, 01:13 PM
Good to see that you have entered the fray here with your experiments Mark! The more the merrier we say!
A question for you:
You say " I was consistently removing about .001" of blade height with a normal pass on each side. That's a whopping 25µ !!".
What then would you say the "depth" of the grind on the bevel was? I suppose that if we knew the bevel angle of the knife and the thickness of the blade where the bevel begins, we could calculate it. We also see that you made a pass on each side and then measured the reduction in blade height - right? So, assuming a perfect grinding world, the blade height was reduced .0005" per grinding pass?
Have to tell you the truth about Tempilaq experiments. If we can't get 200° to go off during normal grinding procedures we wonder now how much luck you'll have getting much higher temperatures to trigger. There is no doubt in our minds that your touch and control with the Kally is going to be far superior to our own. Perhaps we could send you our 200° and 325° and you could work with those ranges thereby either verifying or contradicting our results. Lord knows that one bottle of Tempilaq would test 5,000 knives so there is no shortage of supply here. Perhaps you may be trying a different approach to the question though and, if so, that's good as well.
By the way, here's an interesting tidbit advanced in this research paper "The chips take away most of the heat generated in the grinding process." https://www.witpress.com/Secure/elibrary/papers/LAMDAMAP03/LAMDAMAP03001FU.pdf. Sort of explains sparks doesn't it?
A question for you:
You say " I was consistently removing about .001" of blade height with a normal pass on each side. That's a whopping 25µ !!".
What then would you say the "depth" of the grind on the bevel was? I suppose that if we knew the bevel angle of the knife and the thickness of the blade where the bevel begins, we could calculate it. We also see that you made a pass on each side and then measured the reduction in blade height - right? So, assuming a perfect grinding world, the blade height was reduced .0005" per grinding pass?
Have to tell you the truth about Tempilaq experiments. If we can't get 200° to go off during normal grinding procedures we wonder now how much luck you'll have getting much higher temperatures to trigger. There is no doubt in our minds that your touch and control with the Kally is going to be far superior to our own. Perhaps we could send you our 200° and 325° and you could work with those ranges thereby either verifying or contradicting our results. Lord knows that one bottle of Tempilaq would test 5,000 knives so there is no shortage of supply here. Perhaps you may be trying a different approach to the question though and, if so, that's good as well.
By the way, here's an interesting tidbit advanced in this research paper "The chips take away most of the heat generated in the grinding process." https://www.witpress.com/Secure/elibrary/papers/LAMDAMAP03/LAMDAMAP03001FU.pdf. Sort of explains sparks doesn't it?