Rick Weaver
Well-Known Member
Guys I have been lurking for a bit trying to learn as much as possible and it has been helpful. Over the July 4th holidays I had an opportunity to complete the metal work on blade number 3, 4, and 5.
Numbers 3 and 5 were blades I ground out of 440C. Number 4 was one I ground out of 1080.
My problems ocurred with the 440C. My first knife blade was ground from 440C and heat treated using steel foil and a postage stamp size piece of paper inside the foil to help prevent scale. As far as I know I did the heat treating on blades 3 and 5 just like my first blade but it did not turn out the same. The first blade I did. didn't have any heat scale or stains on it and was very easy to clean up.
The blades I did this weekend have a lot of stain on them and I am baffled. First the staln is obviously a form of scale or some such and darn near impossible to get off without regrinding. I was really disappointed.
Anybody know or have a suspicion as to what I did wrong? My guess is that somehow my wrapping the blade in the heat treating foil was improper somehow or I did not use enough paper to utilize all the oxygen within the foil.
As these were my third and fifth blades it is obivious that I am green as a gourd at this. Hope you guys can get me on the straight path again.
I am a good student and take direction well. So my wife of nearly 40 years tells me. Thanks in advance.
Rick
Numbers 3 and 5 were blades I ground out of 440C. Number 4 was one I ground out of 1080.
My problems ocurred with the 440C. My first knife blade was ground from 440C and heat treated using steel foil and a postage stamp size piece of paper inside the foil to help prevent scale. As far as I know I did the heat treating on blades 3 and 5 just like my first blade but it did not turn out the same. The first blade I did. didn't have any heat scale or stains on it and was very easy to clean up.
The blades I did this weekend have a lot of stain on them and I am baffled. First the staln is obviously a form of scale or some such and darn near impossible to get off without regrinding. I was really disappointed.
Anybody know or have a suspicion as to what I did wrong? My guess is that somehow my wrapping the blade in the heat treating foil was improper somehow or I did not use enough paper to utilize all the oxygen within the foil.
As these were my third and fifth blades it is obivious that I am green as a gourd at this. Hope you guys can get me on the straight path again.
I am a good student and take direction well. So my wife of nearly 40 years tells me. Thanks in advance.
Rick