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Tristan Ruggeri

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About Tristan Ruggeri

  • Birthday 06/30/1990

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    VIC, Australia
  1. I have limited smelting experience (four medium-small runs), but have had successful runs each time, and i think it's important to not forget to watch the flame out of the stack for color, as well as what everyone else has said so far. You want to get the stack as hot as necessary, but with a more reducing flame. You don't want your flame to be too blue or too yellow, so adjust your fuel and air to adapt. Unfortunately each furnace is different so the exact color you want varies, but I went for a flame with a bit of blue/white in the center surrounded with some orange (Similar to number 2
  2. I think a steel is only useful for high HRC knives if the edge is kept sharper/narrower than a normal knife, since at the very edge where the blade is the thinnest, if it's thin enough it will start to bend there, but if it's not as sharp, like the level of a normal kitchen knife will stay at, the edge will still be too think to bend. Basically steeling is useful for high hrc knives, but only if you make sure they stay sharp otherwise.
  3. That's great! Always good to see some crucible steel from recycled sources, it'd be nice to melt down something with some sentimental value to produce a blade. I'm curious, do you think a waste oil foundry would get hot enough for crucible steel production?
  4. Oh man that looks like an amazing heat treat oven. I think in future I'll need to make one similar to this, because this looks fantastic!
  5. Looking good! What do you think the key factor was that made that ingots workable this time?
  6. I'm realize you mean clay-graphite crucibles, but you may want to consider making single use crucibles if you don't want to risk breaking an expensive one when your experimenting. Dmitry Malakhov from art and knives uses this recipe which uses mullite if you want to have a go. http://www.artandknife.com/crucible.html Everyone I've heard uses gas furnaces for wootz, most with a layer of High temp kaowool then refractory cement. Oil furnaces are possible, but are difficult to make at wrought iron melting temps, and they're mainly used for cast iron. However for 4-10 kg of wootz per run I don
  7. Oh well, those were nice looking ingots, shame they couldn't handle forging. The way I see it, there are 3 things that could be contributing to this. You may be getting some of the gaseous impurities/emissions dissolving in the steel. I don't know how well borax helps with this, but in Ric Furrers Crucible steel video, he put in the crushed glass on top, and quartz silica sand in the mix which went to the bottom. If you think about it, when you cover the charge with the glass, it melts on top of the steel, but never really mixes through it. If you have glass powder/sand at the bottom, it wil
  8. Liking the look of this crucible, but I'm wondering if that glassy looking patch on the top is glass in another shrikage cavity. I noted you shot for a lower carbon content this time, around 1.3%C. I'm curious how much carbon the crucible transfers to the ingot. Lets hope you can find a mass spec to use. I may have been able to talk the guys at my Uni to stick a sample through, but I'm here in Aus. (BTW, I'm the guy from the Youtube comments, finally figured out that you need to actually use your name to become a member here.)
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