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About SLAG

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    Junior Member

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  • Gender
  • Location
    St. Louis, MO


  • Location
    Montreal, Quebec, Canada
  • Interests
    almost everything
  • Occupation
    Patent lawyer & reg. agent. (Cda. & U.S.A.)

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  1. What Did You do in the Shop Today?

    jlpervicesinc, Crooked knives come in a vast array of sweep sizes. The Lee valley catalogue shows many different styles that are for sale. (they are not the only retailer that does so, it was the first company that came to mind). The majority of such knives have more belly in the blade shape. (the most extreme ones are almost semi circular-like. But they are not common.) JHCC you made a very interesting handle shape. Is it your design or do some Indian tribes use a similar design? SLAG.
  2. Frosty, About 3 years ago, or so, ago someone on this site posted a, u.r.l. showing a nail making factory. The machinery is/was over a hundred years old. The video showed the whole process of that manufacture. Where is it? I don't remember. Give it a brief search, And let know if you find it. I would like to see it again. It probably was on You tube. Regards Kiddo! SLAG.
  3. I neglected to discuss the difference between completely hand forged nails and the latter-fashioned cut nails. A major difference is that hand forged nails usually have a tapered square shaft with a square cross section. Usually the hand forged head of such nails was squarish too. But not always. Cut nails usually have a rectangular cross section and head. The majority of such nails taper in one plane, and not two ... Most of the machines used flat iron sheet, and sheared it to make the nails. SLAG. Just found this, Ezekial Reed patented his nail making machine in 1786. (in the U.S.A.) Thomas Clifford patented his machine, in the U.K., in 1790 The Ardox spiral concrete nail was invented by metallurgist Allan Dove in 1954. But came into use in the early 1960's. He worked for Stelco Canada dominion works in Lachine Quebec. (Montreal).
  4. Professor Thomas D. Visser, (of the U, of Vermont), explains succinctly the difference between the first machine fashioned cut nails. Namely type A and the latter type B cut nails. He also explains how to tell one cut nail type from the other. Let me quote him, (as I cannot do a better job), "Between the 1790s and the early 1800s, various machines were invented in the United States for making nails from bars of iron. The earliest machines sheared nails off the iron bar like a guillotine. The taper of the shank was produced by wiggling the bar from side to side with every stroke. These are known as type A cut nails. At first, the heads were typically made by hand as before, but soon separate mechanical nail heading machines were developed that pounded a head on the end of each nail. This type of nail was made until the 1820s. By the 1810s, however, a more effective design for a nail making machine was developed; it flipped the iron bar over after each stroke. With the cutter set at an angle, every nail was sheared off to a taper. With the resulting nails thus all oriented in the same direction, it became possible for the same machine to automatically grip each nail and form a head in a continuous mechanical operation. Nails made by this method are known as type B nails. Cutting the nails leaves a small burr along the edge as the metal is sheared. By carefully examining the edges for evidence of these burrs, it is possible to distinguish between the earlier type A nails and the later type B nails. Type A nails have burrs on the diagonally opposite edges, while the type B nails have both burrs on the same side because the metal was flipped for each stroke." His one page article on this subject can be read here, That article displays drawings of the various nails. Check it out. Cut nails have a four time greater holding strength than wire nails. They are still used for flooring nails, masonry nails, and those for boats. But they cost more. The spiral shaped cut nails have a holding power that approaches that of cut nails. (I think they were invented in the early 1960's, but I'll have to confirm that. The patent's validity was hammered out in the celebrated Sivaco wire patent case) I have been interested in the history of nail manufacture since I was a young boy. I am amazed that several folks, on this site, have a similar interest. SLAG. I was 'taught' that the first nail making machine was invented by Mr. Ezekial Reed. I have just confirmed this. He invented the machine in the 1790's. check this reference, Add that factoid Wikipedia.
  5. Presses Suggestions Sought

    This subject was discussed in a thread about 3 weeks ago. Search it using the phrase iforgeiron and the subject words using your favorite search tool. (e.g. google etc.).. The search engine on this site is not very good. SLAG.
  6. Mr. Dragon, You are a very lucky man (& spouse) in that this fellow chose you. Regards, SLAG. I think Merlin made a very wise choice.
  7. Krush Sir, $17 for 50 pounds would be somewhat steep for the U.S. Tractor Supply sells anthracite 40 lb. bags for about $6.00 Have you contacted the Mennonites/Amish around St. Jacobs Ontario? (Kitchener- Waterloo area), they may be able to sell you some for a better price. Especially if you buy in bulk. Where are you located? (London?, Tobermory?). SLAG. Got it, in the Bruce peninsula.
  8. Shop Class?

    If one studies statistics thoroughly one can spot most frauds and data manipulations. Any subject can be finagled. Statistics is an acute example. Without statistics most of us would be 'lost in the wilderness". And most of us are. I eagerly await the expected screaming dissents with anticipated glee. Bring it on Pilgrims!. SLAG.
  9. Shop Class?

    It is a shame that those malignant academic mathematics teachers insist on raw knowledge for its own purpose. They are loath to point out the practical uses for a concept. For example, trigonometry and calculus are extremely valuable and can be readily useful. One of the primary uses that spurred the discovery of trig was in surveying. Also measuring the height of a (large) building or mountain without having to climb them trailing a measuring tape. The two primary functions of calculus, namely the differential and integral were discovered in order to solve two very important practical problems The differential function helped military artillery men to determine the angle of a cannon barrel in order to hit a target. The integral was conceived to solve the actual amount a wine barrel, of a given height and girth, would hold. I.e. the gallons (liters), of wine the barrel would contain. Previously the ratios were compiled by trial and error. And those findings would be passed on to future users. Why use an integral function to figure out the barrel volume? Because barrels are not straight sided they arcuate (bowed). The width changes as the height, of the barrel, changes. Calculus is required in statistics among other areas. For example, even psychology graduate students must learn rudimentary calculus in order to use statistics, in order know and use their practical uses. SLAG.
  10. The Dreaded Dimple!

    Many smiths dip the punch in water after striking with it, two times. Works for me. I would keep the eye punch and smith a new 'countersink' one. Incidentally, You/this thread has given me a new idea for crafting some eye punches that will entail a little less work/time. Thanks. Regards, SLAG.
  11. Thomas Powers offline

    T. P., Have a good trip, a warm reunion, and a safe return. Vaya Con Dios. SLAG.
  12. What item is this?

    D IVE, If it's a thermometer, can you test it with a moderate heat source? Comparing its read out with a known thermometer would work even better. SLAG.
  13. cabin fever

    JHCC, That's all Greek to me. Where did you get that typewriter? SLAG.
  14. cabin fever

    Mr. Elements Sir, You have great taste in literature! my friend . Impressive. The stanza is from the great poem, The Cremation of Sam McGee, one of the most famous poems of Mr. Robert Service "The Bard of the Yukon". A great poem, a wonderful tale and now a Canadian classic. Highly recommended to ALL the iron bangers on the site. Permit me to quote a little of the start of the poem and some of the end. There are strange things done in the midnight sun, by the men who moil for gold; .... The Arctic trails have their secret tales That would make your blood run cold; The Northern Lights have seen queer sights, But the queerest they ever did see Was that night on the marge of Lake Lebarge I cremated Sam McGee. Is that not classic, stirring, and stellar? HUH? (or in Canada AY?) Thank you Mr. Elements and also Glenn, whose tolerance is hoped for. SLAG. p.s. the term 'queer' supra, is used in the original sense (to be strange).
  15. cabin fever

    Mr. Dabbsterinn, 6 degrees Fahrenheit is comparatively not particular cold. Please let me explain. 5 layers of clothes is excessive. I suspect that that each layer fits tightly. Such a set up does not allow enough trapped air to be heated , be trapped and circulate between the outer shell and your body. Cold weather dwellers such as in northern Canada, the Inuit (a.k.a. Eskimos), and northern Indians, (for example Dene, Dogrib, Aleut etc. etc.) know to dress in loose fitting layered garments. 3 usually. And four or more in very cold climate conditions. (-10 to -40 degrees Fahrenheit). The majority of people new to cold climates figure that many layers close to the body will keep out the cold. That is not the case. Loose clothes work. They trap air that our body heats up and keep it close to the body. Tight clothes radiate body heated air to the environment. Why layers? The reason is that when the wearer gets hot, sweating occurs Which can produce condensation which interferes with body insulation. (except wool). So you remove a layer to preclude that problem. The outermost layer should be wind proof. Today nylon or ... (sealskinwas used in the old days The Inuit know even better. They work steadily at a slow, even pace. That way they do not sweat, at all. Why do I stop this explanation at minus 40 degrees? Below minus 40 they stay inside and relax. In the old days they would go into a kind of torpor and wait out the cold snap. (it usually lasts only 7 days sometimes 2 weeks. But, today, there is central heating in most of the Arctic, so that the former described solution is no longer necessary. Also, Goretex fabrics help deal with condensation. But slow & steady works even better. I am guessing that many Icelandic communities are on, or are close to the Atlantic coastline. (e.g. Reykjavic, Akureyri, etc. etc.). Costal towns have milder temperatures, because the Ocean transfers a lot of heat to the land.) That effect is dramatic. Halifax, Nova Scotia, Canada is on the Atlantic coast. The winters are very much milder there, than at the airport only 23 miles inland. An old friend of my father's worked building stations on the early warning chain of radar stations on the Dew Line (& Pine Tree Line) in the late 1940's. The Army Corp. of Engineers personal, working with him, were freezing. They noticed that he was working hard and feeling just fine. And they did not know why. He explained They eventually pulled him off his duties and had him give cold weather survival seminars to the new personnel, full time. Many of the new people had grown up in the U.S.A. south and southwest. He had grown up in the winters in rural Saskatchewan. (read savage cold). Trust me. It worked for me in the Canadian north and Arctic. And it will work for you. SLAG.