Shane Wink
Well-Known Member
Jason Wilder and I were talking about heat treating some 01 blades and taking the edge to .020 before heat treat. I had been taking 3v to .015 before ht in tool wrap but never a hypereurutic steel with and edge below .050.
I told Jason I would make two identical stock removal blades from some of aldos 1084. They were both ground to .020 from tip to ricasso and one was coated with pbc high temp and the other left uncoated.
The blades were placed in the oven @ 1250* and ramped up to 1500* over the next hour. Both were quenched in 100* p50 with the uncoated blade being first. Both blades were cooled in the oil using slicing motions till they were oil temp then placed in the oven @ 400* for two 2hours cycles.
After all this the blades were sanded to .015 and the edge convexed with a full bur running along its entire length then strophed it off.
The question was whether or not it mattered if the blade was coated or not with the edge at .020 and after cutting boxes and rope I noticed the uncoated blade began to drag quicker than the coated blade. I strophed the two blades back to what I believed to be equal sharpness as best I could and cut more boxes and rope and again same results.
What do y'all think? Has anyone else ever done a test like this? What were the results? Do y'all have any suggestions as to what may improve the blades and the test?
I told Jason I would make two identical stock removal blades from some of aldos 1084. They were both ground to .020 from tip to ricasso and one was coated with pbc high temp and the other left uncoated.
The blades were placed in the oven @ 1250* and ramped up to 1500* over the next hour. Both were quenched in 100* p50 with the uncoated blade being first. Both blades were cooled in the oil using slicing motions till they were oil temp then placed in the oven @ 400* for two 2hours cycles.
After all this the blades were sanded to .015 and the edge convexed with a full bur running along its entire length then strophed it off.
The question was whether or not it mattered if the blade was coated or not with the edge at .020 and after cutting boxes and rope I noticed the uncoated blade began to drag quicker than the coated blade. I strophed the two blades back to what I believed to be equal sharpness as best I could and cut more boxes and rope and again same results.
What do y'all think? Has anyone else ever done a test like this? What were the results? Do y'all have any suggestions as to what may improve the blades and the test?