02-16-2018, 10:48 AM
Thank you for your comments, calculations and observations here me2. They are much valued and Mark R., the same goes for you. Your comment Mark, "Well, I'm not surprised I was wrong. I can do that all the time" is the only thing that you've written in this thread that is wrong. For us, knowledge takes two forms, things we don't know and things we think we know. When we began this thread we didn't know the practical relationship between Rockwell 60 and 61. Now we think we do with some degree of accuracy. Actually, some of your observations have helped lead us to where we stand today. Its a team effort on the BESS Exchange.
I (not "we") attended a scientific seminar some time ago and the speaker began his remarks with this statement "The sun always rises in the East, that is, up till now." I've always remembered that statement because it highlights the fragility of "what we think we know". Until the sun rises in the West one morning, we'll think that it always rises in the East.
You are very much far from alone, Mark, in your perception that steels exhibit much greater differential resistance to abrasion (and other qualities and characteristics as well we assume) than is indicated by our calculations. From that then is spawned another question, "what might be the other characteristics of various steel and/or the processes that steel undergoes in the knife making progression that would leave us with this impression?" In other words, "if its not hardness alone then what is it?" Perhaps food for thought in a another thread.
We simply cannot heap enough kudo's on our partner Jan's doorstep. We've been working together on this for the better part of a year and the answer popped out, literally, over the course of the past few days. Jan is the one who has packaged this up into a very neat, tidy, mathematical formula. Thank you Jan! We're going to have to get our heads together with Jan in order to decide how this should all be bound up into a complete reference material. We're sure that there will be more to come.
I (not "we") attended a scientific seminar some time ago and the speaker began his remarks with this statement "The sun always rises in the East, that is, up till now." I've always remembered that statement because it highlights the fragility of "what we think we know". Until the sun rises in the West one morning, we'll think that it always rises in the East.
You are very much far from alone, Mark, in your perception that steels exhibit much greater differential resistance to abrasion (and other qualities and characteristics as well we assume) than is indicated by our calculations. From that then is spawned another question, "what might be the other characteristics of various steel and/or the processes that steel undergoes in the knife making progression that would leave us with this impression?" In other words, "if its not hardness alone then what is it?" Perhaps food for thought in a another thread.
We simply cannot heap enough kudo's on our partner Jan's doorstep. We've been working together on this for the better part of a year and the answer popped out, literally, over the course of the past few days. Jan is the one who has packaged this up into a very neat, tidy, mathematical formula. Thank you Jan! We're going to have to get our heads together with Jan in order to decide how this should all be bound up into a complete reference material. We're sure that there will be more to come.