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Bennypapa

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  1. Starting about 4:30 they begin heat treating blades. The process appears to be edge heat, oil quench, dual hammer, scrape edge, straighten, scrape, final cool in water. The hammering right after the oil quench has me confused. They hammer both sides without really looking for straightness so I'm not SURE if this is a straightening procedure or what. What's your take? Why are they double hammering both sides after the edge quench? https://www.youtube.com/watch?v=gNeJQvooxAk&t=66s
  2. I think you are on the right track with the 36" or 48" dia platen.
  3. 72" radius would make a 12 foot diameter wheel. I don't think I've ever heard of anyone using anything that large. Most of the ones I've seen are about 3'-4' DIAMETER (18"~24" radius).
  4. I should have stated central US. We have home depot, lowes, michaels, hobby lobby and an actual hobby store. Are there any brands that are better than others?
  5. I don't have brick dust on hand but i do have the other materials i mentioned. What is your favorite, locally available epoxy?
  6. I wonder if iron oxide would work. I have some on hand from my pottery hobby. I might also bisque fire some powder terra cotta clay I have. That would be really inert and mimmic the chemistry of the brick dust exactly.
  7. I'm looking for an epoxy additive that will mimic the look of cutlers resin using brick dust. Is there such a thing as stains for epoxy?
  8. found the video with the sen
  9. If you look around on youtube i found a couple other videos showing the use of a sen. One in particular featured a father and two sons. Super production quality on that video too. Ill see if i can find it.
  10. What is the purpose of cold forging as seen at about 6:00 in this video. Ive seen this technique in some videos of other Japanese knifemakers too. Sometimes done on a stump, sometimes on an anvil, once on a power hammer.
  11. Comments welcome huh? How about "beautiful" or "elegant" or "awe inspiring" Those work? Can't wait to see it polished out. Ben
  12. If you want a smoother mix you might try including calcined kaolin in the mix. Serves the same purpose as grog only it is finer particle. You would have to experiment to determine the right proportion. Ben
  13. See, I was thinking it was more to do with varying hardness within the steel. HMM. If the outer layers of steel are harder than the interior the tooth will cut it differently when it runs perpendicular to the face. As it moves from hard to soft steel it will cut away more of the softer steel. That is my theory anyway since the pars of the piece that were parallel tothe blade didn't show the same effect. Do the teeth of a metal cutting band saw have any set? If so then what we are seeing could be due to the alternating teeth's set as they enter the cut. Could it be both? FWIW I
  14. I am building a KMG clone and hade these pieces of scrap cut on a band saw at the local metal supply place. A couple of days later I was looking at the cut edges to see if they had rusted any when I noticed a strange thing had been revealed by the cutting. My link The cut was made with the steel lying on its larger side and when the blade broke free from that it was only cutting the vertical portins of the narrow sides. I guess the inner core of the steel is softer and the blades teel have some set to the so they didn't cut the harder outer skin as easily as they did the inner softer c
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