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Showing content with the highest reputation on 10/16/2019 in all areas

  1. 3 points
    I'm 1900 of my monopoly moneys into the build.....but I'm very happy with my beefy 5160 platen Slightly nervous about heat treating it, but if it warps i'll be on the lookout for somebody with a surface grinder Still waiting for the quote on the backplate.
  2. 2 points
    Often my inspirations will come to me late at night. I try to get to a pen & paper while the idea is still fresh in my mind and jot down a crude drawing of it so I can remember it the next morning. Here's my latest: The best way that I know how to describe it will be a "skinny W" that will be forged into a jelly roll. This will get 4-wayed with every other piece reversed. A second pattern will be a stylized "W" that gets squared on the bias and then sliced into tiles and cut in half making mirror image triangles. I'll then arrange the tiles of both patterns into a diamond array in a canoe. I haven't yet designed a blade shape for it but knowing me, it will probably be a Bowie. I'll try to keep you updated as I progress with it.
  3. 2 points
    I believe the general consensus is that a Blacksmiths knife is the theme for this year's Christmas KITH. I'm thinking that we should decide on what exactly the parameters are so people can feel comfortable getting started. Here's my take: Any length/style of blade. Blade and outer handle frame forged from a continuous piece of steel (Damascus billets and other multi piece construction allowed, as long as it's forge welded into a continuous piece) Decoration may be added as long as the outer handle frame is not hidden or compromised. Mechanical fasteners allowed for decorative purposes. Firm due date of 12/15/2019 (allows for shipping time before Christmas). Maybe I'm barking up the wrong tree. Thoughts?
  4. 1 point
    My first attempt at a knife handle. Partly for fun and partly to show off the blanks that I’m going to be selling I put a handle on a Brisa skinner. It’s made from some yew I had in the workshop, the best of my yew wood is still drying, see top pic. It’s a fairly round handle as I often reverse the knife when I’m skinning so I can use it blade up or blade down.
  5. 1 point
    Hey guys! Here is a knife I made as a gift for William Short, the leader of Hurstwic, as a thank you for inviting me to Iceland on an iron making expedition this summer. We went and created iron for the first time since the 1250's in Iceland, after Norway forced them to start importing iron instead of making it. There are however, about a bazillion (scientific term) iron rich streams and bogs in Iceland, and naturally occurring Kaolite, plus many archaeological sites where a lot of iron was produced, such as Eidar where ~1000 tons of iron were produced over about 300 years. Added to the fact that there are other sites where bloomery furnaces are found, on farms with an iron rich stream nearby, and where forest used to be, on a body of water connecting to or on the ocean, it seems iron production and export was very common in Iceland. Bill first got interested in all of this after seeing Eidar, and after some experimenting at home it was time to go. I'll probably post something more about that trip in the bloomers and buttons forum or something, but at any rate! He was kind enough to bring me in as a consultant during the experiments and learning at home, in preparation for the event in Iceland, and he invited me to go with them. As a thank you, I wanted to make him something in the style of what an imagined settler of Iceland could have carried. We had a feast in the reconstructed longhouse of Eirik the Red and gifts were given, which is when I presented this secret gift to him! Without further ado, here's the photo essay! One of the bloomery furnaces we ran at Bills house during the year of prep for the festival. The actual material for his knife came from maybe the second or third smelt I believe. A small collection of the bloom we had made over the year, sliced up into easily workable sections for forging. Most of it was steely bloom as opposed to iron, so this particular material needed a bit of extra careful folding and forging. I chose a piece I liked the look of and began to fold it. Two folds in! Looking surprisingly good considering the nature of this material. Some nice sparks from the bar 6 folds in. After 5 more folds (total of 11) it was ready for forging. I forged and ground the blade quickly and then hardened it in water. You can see the artifacts of hardening, which will be visible in the final product. Skip forward another 6 hours or so, and you have a finished knife! Sitting on a piece of bloom and a chunk of boxwood. I started designing some carvings based off a Norwegian church carving. I designed on the sheath in pencil and then began the carving, the entire process from starting the design to finished carving took maybe 2.5 hours which I am very pleased with! I am beginning to feel more comfortable with these styles of decoration Half way there. Here I am about to complicate the knots on the right side of the sheath nearest where the leather strings will sit, and I chose to make some unresolved lines as well. Most of the period art I have seen seems to have some lines that don't quite go anywhere. I think this is wonderful, and wanted to add some of that into this piece. A shot in more natural light showing how well the stippling brings out the definition in the carving. And done! Aside from dye that is. The runes say who it was made by and for whom. I also added the grace lines, to visually complicate the knots. Above the runes you can see the extra knots I added that aren't resolved. It was definitely odd making the carving 'imperfect' but I quite like the result! Dyed! After a few minutes when it is dry you can buff with a paper towel or some other soft rag to brighten the high spots and matte the lower ones. And some finished shots/video! The second video shows the blade moving in the light a bit, showing the hamon. IMG_2066.mov IMG_2048.mov Anyway, hope you guys enjoy the knife! -Emiliano
  6. 1 point
    Before I knew better I once melted a couple of hundred kilos of lead on one session with an oxy propane rosebud, casting it into cylinders to be used to test the blow energy of a big hammer. Retrospectively i'm sure I was ill for weeks after from it, I wonder how much of it is still in my bone marrow ?!
  7. 1 point
  8. 1 point
    Incredibly important information guys. This stuff should be on the terms of service for any smithing site and not just a blow through to accept the terms of service either. From experience: around the age of 10 until 15 I use to smelt lead for casting and all around because it was fun. Didn't know the dangers. All I've ever heard was don't eat it. I developed vision problems that finally went away after 15+years. My eye sight was 20/15 before to 20/70or85 I think it was. Had to wear glasses in the army. A couple years ago I noticed things that were fuzzy like vanity plates I could read over 100ft away. My vision finally improved. However, as any doctor can tell you the brain didn't. I've had serious mood swings and definite anger issues turn up over the years. I can tell it caused permanent damage. Sweets are overbearing, I'm easily overwhelmed by well lit rooms or cloudless days. I can't focus well. I'm constantly nauseous. A myriad of issues from my dumb kid days. Even recently I experienced metal fume fever from a galvanized forge burner I built and once again ignorant of the possible danger. For a week I was extremely irritable, massive headache, couldn't stay awake, mood swings, and no appetite(even if I tried Id just puke). CO is just as bad if slightly short lived but just as damaging. Also heat exhaustion guys. Probably just as important. In my army days I'd see guys drop like flys in a gas chamber from dehydration and over heating. Hey I love to try and just finish those last few heat and hammering's but if your dizzy or just drained then just stop. Ain't no man ever been a real man if he's dead.
  9. 1 point
    Awesome!!! The way you can develop a pattern in your head is incredible!!! And the fact your willing to share is even more incredible!!!!!
  10. 1 point
    Plus it's not a good way to go. It's heavier than air so fans don't disperse it, it can be explosive in the right concentrations, and if it's strong enough to knock you over, it can do that to anyone who tries to drag you to safety. When I was in graduate school I toyed with the notion of going into forensic anthropology (well before any of the CSI-type shows were around, I may add!), and as such got to work with Dr. Bill Bass, famous operator of what we called "The Facility," but which the rest of the world knows as "The Body Farm." This is a facility where the effects of various environmental factors on human decomposition are studied. Once each experiment has run its course, the remains must be gathered. From this experience I can tell you that the purple you turn from CO poisoning is permanent (assuming you die from it), and renders you poisonous as well. Prepare for a closed-casket service.
  11. 1 point
    OSHA regs specify you may be legally (not necessarily safely) exposed to 50 PPM of CO per hour, averaged over an eight-hour period. That said, exposure to 70 PPM will cause noticeable symptoms in a few minutes, over 100 PPM can cause death if symptoms are ignored. My detector goes off at 20 PPM, and has only done so when the coal stove has a backdraft. Here's what OSHA has to say about it: "Carbon monoxide has over a 200-fold greater affinity for hemoglobin than has oxygen (5.18, 5.19). Thus, it can make hemoglobin incapable of carrying oxygen to the tissues. The presence of CO-hemoglobin (COHb) interferes with the dissociation of the remaining oxyhemoglobin, further depriving the tissues of oxygen (5.15, 5.16). The signs and symptoms of CO poisoning include headache, nausea, weakness, dizziness, mental confusion, hallucinations, cyanosis, and depression of the S-T segment of an electrocardiogram. Although most injuries in survivors of CO poisoning occur to the central nervous system, it is likely that myocardial ischemia is the cause for many CO-induced deaths (5.18). The uptake rate of CO by blood when air containing CO is breathed increases from 3 to 6 times between rest and heavy work. The uptake rate is also influenced by oxygen partial pressure and altitude (5.20). Carbon monoxide can be removed through the lungs when CO-free air is breathed, with generally half of the CO being removed in 1 hour. Breathing of 100% oxygen removes CO quickly. Acute poisoning from brief exposure to high concentrations rarely leads to permanent disability if recovery occurs. Chronic effects from repeated exposure to lower concentrations have been reported. These include visual and auditory disturbances and heart irregularities. Where poisoning has been long and severe, long-lasting mental and/or nerve damage has resulted (5.15). The following table gives the levels of COHb in the blood which tend to form at equilibrium with various concentrations of CO in the air and the clinical effects observed (5.21): Atmospheric CO (ppm) COHb in Blood (%) Symptoms 70 10 Shortness of breath upon vigorous exertion; possible tightness across the forehead. 120 20 Shortness of breath with moderate exertion; occasional headache with throbbing in the temples. 220 30 Decided headache; irritability; easy fatiguability; disturbed judgment; possible dizziness; dimness of vision. 350-520 40-50 Headache; confusion; collapse; fainting upon exertion. 800-1220 60-70 Unconsciousness; intermittent convulsions; respiratory failure; death if exposure is prolonged. 1950 80 Rapidly fatal."
  12. 1 point
    Those are very nice Gerhard. Starting to make me worry that my skills are not adequate for KITH submission. Did you rivet, like Lin, or forge/arc weld the loop closed?
  13. 1 point
    Look what the FeCl showed me Quite happy with this little one.
  14. 1 point
    In a forced air forge you can avoid this problem by running your air source for a few minutes after you shut off the gas.
  15. 1 point
    I forgot about #5. I once turned a 12" black pipe nipple into a 6" nipple by not protecting it from the flame. Doug
  16. 1 point
    It will gut many a trout! I’ll let you know what I think after I carry it for awhile.
  17. 1 point
    Good advise. I have a friend in South Africa who is cutting some exotics (tambotie, olivewood, cammelthron & red bushwillow) and I told him the same thing. Cuting them into knife handle blocks of 5 - 6 inches of 1 1/2 x 1 1/2 (minimum dry size) and what may seem spectacular in the board form can sometimes seem a bit ordinary in block form so much can be lost. Most knifemakers are not interested in plain grained blocks without good colour and or grain contrasts regardless of the exotic species..
  18. 1 point
    Ah, I missed the bit about ceramic wool, sorry. Yeah, that'll be fine.
  19. 1 point
    @Joshua States it is mostly used for aluminum, yes, but is also used for magnesium and a few niche applications. It can also be used for rusty steel, but youre better of just cleaning the steel and using DC. The reversing polarities of AC have an inherent cleaning action, cutting through the oxide layers which melt at much higher temperature then the base metal itself. One assumes you could just clean metals like aluminum or magnesium before welding, but they form an oxide layer immediately on contact with air, which means any time between cleaning and welding just builds more oxide, and these metals are very touchy about welding with oxide layers present. During the electrode positive (EP) portion of the AC cycle, the current is flowing from the workpiece to the electrode, thus "blasting" or "pushing" the oxide layer away. The electrode negative (EN) portion of the AC cycle then has a clean section of metal to fuse, free from oxide, when the current pushes from the electrode to the work. The shielding gas used (argon or helium usually, depending on the situation) prevents more oxide from forming by pushing away the ambient air, forming a cloud of shielding gas, essentially. Keep in mind that many, many AC cycles are happening every second, and you can adjust the number of cycles per second on most higher end machines, as well as the balance control, which is whether it favors more cleaning or more penetration (EP or EN, respectively.) You want to use as little EP as possible, if you can adjust it. EP tends to cause excessive heat build up, which is not good for your tungsten or your material being welding. A quick note on shielding gases; argon, which is heavier than air, is typically used when you're welding downwards, like on a welding table. This encompasses 90% of all TIG welding, I would bet. But this is so the heavy shielding gas is pushed down onto the weld. Helium is used if you're welding above yourself, so the light helium rises up into the weld. Hope that wasn't too long winded. I'm having flashbacks to welding school .
  20. 1 point
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