Myles Mulkey Posted May 16, 2013 Share Posted May 16, 2013 Hey forumites, I have had a bad day. Maybe you guys can help me figure out where I went wrong. I've been working on pocket knives for my groomsmen (getting married in a month!), and I have had nothing but trouble from these knives the whole time. They were butt welded wrought and quarter inch coil spring (no idea where from, it's been sitting around forever). They ended up super teeny tiny, but I figured they would be alright as pocket knives. But I got a bad surprise this evening. I decided to etch the one I polished earlier this evening while I had the time. When I pulled it out of the etch, I noticed a small, straight crack running perpendicular to the edge. As I looked up and down the edge, I counted nine cracks, spaced closer together towards the tip. Absolutely ruined. Have to start all over. I fear the rest of this batch will end up the same way. Now, I've cracked blades before when quenching in water, but these were oil quenched. They were normalized three times, and they looked fine when they came out of the quench. But they obviously weren't fine. I just don't know where I went wrong. I quenched at non-magnetic. These were thin blades and they cooled quickly when taken out of the fire, but I took care not to forge too cold. They were tempered to a damn light blue color; too soft really. What happened??? Why the cracks??? I bent it to almost 90 degrees before the steel broke along one of the cracks. Grain looks fine. What did I do?By the way, when I forge the replacemets, I'm making them thick and wide and out of predictable, non-alloy steel. No more of this "sleek, never know it's in your pocket" stuff. BIG, STRONG, GRRRRR haha By The Red Embers - my blog Link to comment Share on other sites More sharing options...
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