Changed the first one (so check it also) and here is another pic. I did etch the blade. Soaked it in vinergar until it got the color and contrast that I wanted. Took about 2 hours.
I wanted to see what temper line I had on my 12" villager too. After convexing the edge and bringing up the polish I etched it in hot vinegar. I glued a cap on an 18" piece of 2" PVC pipe. After the glue set up, I put the pvc pipe in the oven at 250" for about 10 minutes. With a glove I held the upper 14" on the counter and pressed the pipe nearly flat, so a khuk would fit into it. Now I can etch all but the widest blades. It soaked in the hot vinegar for about 45 minutes. The blade was washed with soap and water and then rubbed with a paste of baking soda to neutralize the acid. A little flitz and some elbow grease took off the oxide coating, leaving a pretty good temper line. I had a heck of a time getting a picture, but I think you can see the hardened zone.
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