Joshua States Posted March 1 Author Share Posted March 1 (edited) 6 hours ago, Aiden CC said: Is this stuff something like a mixture of ore that got reduced and some which was just melted? I can imagine that if there wasn't a clear slag layer, this material may be a challenge as would be a good deal of non-metallic material that needs to be separated. In my crucible I am using crushed green glass for a slag/sealant/flux. This floats to the top in a melt, and this melt was no different. I had to break through the glass/slag layer before getting to this stuff at the bottom of the crucible. 6 hours ago, Aiden CC said: I'm not sure if wootz intends to use columnar (same orientaion, from) or equiaxed (random orientation) dendritic growth, or some mix, but I would imagine that also has subtle influence on the pattern. If I had to guess, I would say many of the dendrites in the etched photo grew "into the page", and what we see is like looking up at a tree from underneath it. I am no expert on this by any means, and I certainly don't have the metallurgical savvy, but.... From what I have been able to learn from guys who have done this a lot, is the dendritic pattern type is largely dependent upon two things: 1. The amount of carbon 2. The amount and type of carbide forming elements (CFE) that are added to the melt. The patterning is really just excess carbon that hasn't been absorbed by the iron and is now locked in the cementite. Get enough carbon in the mix and get the temperature control just right, you can create a dendritic pattern. The CFE controls whether that pattern is linear (like in the second puck above) or more watery, like most wootz patterns we think of. CFE are things like Vanadium, Nobium, Titanium, etc. They combine with the Carbon and form carbides in the steel. The CFE molecules provide an anchor point for carbide formation and if you get the heat control just right, you can get that classic watery patterning in the steel. Now watch as Jerrod Miller corrects me on everything I got wrong.... The first puck has some CFE content. I threw in some of the cast iron buttons I made here. The second puck is just iron and charcoal. Edited March 1 by Joshua States “So I'm lightin' out for the territory, ahead of the scared and the weak and the mean spirited, because Aunt Sally is fixin’ to adopt me and civilize me, and I can't stand it. I've been there before.” The only bad experience is the one from which you learn nothing. Josh http://www.dosgatosdesignsllc.com/#! https://www.youtube.com/channel/UCdJMFMqnbLYqv965xd64vYg J.States Bladesmith | Facebook https://www.facebook.com/dos.gatos.71 https://www.etsy.com/shop/JStatesBladesmith Link to comment Share on other sites More sharing options...
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