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I was tempering 4 D2 blades today 450 degrees for 2 hrs. I got tied up on business and let it run over the 2 hrs. When I got back the oven had cooled down to 375 degrees. I am not sure what to do, any help would be greatly appreciated. Start heat treat over, retemper or what???? Thanks in...

I bought an evenheat ko 18 several months ago and have been second guessing the low temps, so I fired up my homemade oven with an auberins pid and decided to check it with another pid and thermocouple. I drilled a hole thru the door and inserted a k thermocouple and the readings between the 2...

i recently got back 4 D2 blades from heat treating and cryo, 3 were fine. One blade looked like you tried to cut a live 120 volt wire with it. It had a burned out spot about 1/16 x 1/16 in it. I know they had problems with their ovens because they said all of them went out so they had to order...

I am new to hollow grinding, this is my first attempt. I am using 8"serrated wheel on a KMG. I started out with a 60 grit belt and all seemed to go well. I changed to a 120 grit and the blade bounces on the wheel. I slowed the grinder down and still have the problem. I noticed the shaft on my...

I am new to this forum. I started making knives in 1996 and quit in 2001 it turned into a second job and was no longer fun. I am starting back now just making what I want to make and keeping it fun and relaxing. I had done most of my knives on a 2 X 42, but recently bought a used KMG, I am new...