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Jeff Pringle

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Everything posted by Jeff Pringle

  1. I love the dramatic profile, and the interaction of the bevels and the fuller, sweet geometry there Well done, Owen - Bravo!
  2. Richard - I don't think scrapers make that kinda mark, or at least the ones I've used don't. Can't say if they were a part of the Euro tool kit either... Myles - No, it is still in there , nice and stable - in other news, today I got results from a radiocarbon lab on the belt that came with the other sword above - 1250 AD +-30, cool! that is some old leather!
  3. Peterson’s typology is only concerned with Norwegian axes, so is not a complete catalog of the axes in use by Vikings (Scandinavians), or during the Viking age. I’ve been collecting info on the Eastern side of the Viking world for a few years now, so I can shed some light on this issue, hopefully more or less correct …in the Baltic, you had a lot of trade and moving about amongst the Vikings, the Baltic tribes and the Slavs – though the one thing I’m not clear on yet is the relationship between the Rus and the Slavs, the Rus being the Vikings who settled in what came to be called Russia (a
  4. You could also rivet the rivets instead of brazing, they were usually headed on the grip side and finished flush on the pommel. Here are some drawings and x-rays of the three pommel attachment methods used in the Viking age: two rivets, u-rivet and through-tang.
  5. I think I have a different perspective on all this, being a smelter more than a melter, but it strikes me as improbable that a wee bit of oxide on your starting metal or probe is going to make any noticeable impression on the molten slag and steel in your crucible when you are at heat. To believe that, you’d also have to believe your metal did not get oxidized during the initial heating, before your glass melts, no? Since I start with nothing but iron oxide, I have looked elsewhere for the reasons some ingots turn out this way, and discovered that you need a graduate-level degree in thermo
  6. Here's the same effect in a 10th century axe, the iron slabs thickening the edge have that sugary grain, the central material with a bit of carbon does not...so it is an old problem...
  7. I don't recall the why right now, but phosphorferrite gets really big grains, I'll see if I can find the reference. I've seen the effect in artifacts I've looked at. But if you are using mild steel, not wrought, then it is probably just crappy metal that only has a strength spec, not a chemistry spec - like A36 in the US.
  8. More likely, he meant "what else you got in your slag?" since all these chemical interactions depend on what else is there to react with. I didn't read it as argumentitive either
  9. That woman must be a saint! Congrats, Chris!
  10. I knew there was a bloom around there somewhere! That glass window got named the "tuyere eye for the smelt guy" by Jim a couple years back, it is a very cool feature to have during a smelt.
  11. No, there is a U-rivet - check out this version of the image, I’ve outlined/highlighted the pommel cap cross section and staple where they are visible after removal of part of the cap. The copper alloy is clean from micro-blasting (25µ Aluminum oxide); it originally had a thin black oxide coating. I would not expect it to be green, though- due to galvanic corrosion, the copper alloy is preserved by preferential oxidation of the iron when they are in good electrical contact, in this example the cap and u-rivet were 99% turned to oxide while the pommel bar still has a good amount of iron left.
  12. Way to go, Michael! Now you are one of the few people on the planet who really understands why there aren't many contemporary swords out there that utilize this technique I look forward to the rest of this sword story
  13. As soon as the stack is hot enough you can kill the smoke by lighting the gasses coming out the top, but I've never had a 100% smoke-free smelt.
  14. If you keep the smoke down, have some buckets of water and /or hamburgers & other bar-B-que gear on hand you should be okay if you're down on the flats, they are understandably more nervous up in the Oakland hills.
  15. I got to see this in London last week, in person it has a remarkably rich and subtle surface; the carving & inlay work is also subtle and has that effortless look to it that take so much effort to get - well done!
  16. Excellent concept Jake! Norse + long & thin kinda sounds like Urnes style, but here are a couple sword hilt decorations in Jellinge style that look like they could work as horimono...
  17. So that the inlay was melted on after the braze? I don’t think so, at least it would have been impossible with most of the hilts considering the mixed metal designs. Or the other way, so the braze was lower melting temp than the inlay metals? - I’m sure it was, but you’d get a eutectic mess where the different inlay metals met on the surface, especially doing it as Theophilus describes. The book “Metallteknik under Vikingatid och Medeltid” (Oldeberg 1966) refers to the Vikings doing hard/soft solder with different silver/tin alloys and high-zinc bronze alloys, there are lots of analyses but
  18. Looks like Zaqro has been reading Massalski, a very nice result
  19. The u-rivet or staple was brazed to the pommel cap. Estimating back from the current rust, the cross section of the staple was an oval ~ 3x wider than the 2-3mm size of the rivet sections that go thru the pommel bar, and forged to close agreement with the curve of the upper section of the cap and the lower ends. I always thought just gluing the cap on with cutler’s resin sounded a little insecure…I wonder if you could braze an inlaid hilt without messing up the inlay? Probably not. So this hilt was inlaid after assembly… The grey turd-like thing is epoxy that the “restorer” squirted in th
  20. I love the 10-year Laphroaig, it is like drinking a campfire, or getting hit in the face by a clod of burning peat The older stuff is too smooth, you may as well drink McCallan's
  21. I didn’t smelt any of it, since my local ore is so clean it seemed wrong to spend extra time & energy removing sulfur from the Vulcan stuff. You should be able to cook off the sulfur by roasting the ore in an oxidizing atmosphere, you may not have gotten fumed because smelters are reducing atmosphere. I looked around a bit to see if there was any description of the ore’s impurities on the web – didn’t find anything, but here is a reference to closing due to sulfur: http://pubs.usgs.gov/of/2004/1007/humans.html and from mindat.org’s description of the locality, this reference may give a
  22. Excellent flow, that is lookin' good & old
  23. That is wonderfully fossiliferous! An ammonite amen to you, great idea and execution! A mesozoic masterpiece
  24. I'm on my way! The Eyjafjallajökull volcano can make an ash of itself if it wants to
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