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    • Alan Longmire

      IMPORTANT Registration rules   02/12/2017

      Use your real name or you will NOT get in.  No aliases or nicknames, no numerals in your name. Do not use the words knives, blades, swords, forge, smith (unless that is your name of course) etc. We are all bladesmiths and knifemakers here.  If you feel you need an exception or are having difficulty registering, send a personal email to the forum registrar here.  

Jan Ysselstein

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Jan Ysselstein last won the day on March 23

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About Jan Ysselstein

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    west coast of usa ( USACAstan )
  • Interests
    shaping and making of steel and iron

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  1. I converted a 4" diameter 4 grooves v belt pulley to a flat belt pulley by mixing some glass fibers and epoxy ..then forming a smooth shape. Now I need to true it in the lathe and test it. That item will fit on a motor and directly drive a large contact wheel grinder ( 3" by 132" belts).
  2. I would put a little rocking action in the blade edge profile..I use that motion all the time when cutting.
  3. Vern, I am very familiar with the product "Grease Sweep" in the 1960s I worked in a gas station and used it every night at closing time. I make it myself from rice hulls now. Rice hull ash will not work in your application. Rice hull ash is pretty much pure silica and it will need a flux like oxidized iron (FeO) to flux it. Japanese blades are coated in clay and then rice straw ash...the clay provides a rigid structure to act as a protective layer over the metal and a source of silica..the rice straw forms a very viscous ( at high temperature ) paste ( an enamel ) , the metal was never really clean and is coated with iron oxide and at the welding temperature more iron oxide is getting formed by oxygen getting past the protective layer, creating the flux for the silica in the clay. The silica of the clay and iron oxide make the welding flux. So hull ash can be added to the clay ( I do, but grind it to a dust) just to make more silica available and to resist the softening of the clay layer by the rice straw ash. Rice straw ash is already self fluxed by KO and will soften at high temperatures. All this applies to the really clean ( compositionally clean )steel the swordsmiths use..your alloyed steel will probable burn at the temperatures involved in silica welding. I would stay with borax. "he was using rice straw between folds like a flux" by the way the welds are closed without anything being aded in between ..I have seen a video of one smith adding a bit of borax in-between the folded layers an then proceeded as usual.
  4. So your 6" bore is 28 in sq. area, times let's say 14" stroke, times 120 strokes per minute....or 28 " sq. x28" of travel x 120 times per minute. That would be 54 cfm . I don't think you will need to run at 125 psi so you may want to see what that compressor will do at 80-90 psi. I think you efficiency will be better by running at a given psi rather than storing high psi and letting it expand to a lower psi. I used 232 inches cubed per gallon and 7.5 gallons per cubic foot as units to arrive at 54. You will be able to point out reasons why the math is leading to a high estimate but the associated losses will make that a realistic estimate. Jan
  5. I don't know what your anvil weight is ...it should then be about 7000 lbs....some people have access to that seize metal, but it is rare. You will need a 30 HP compressor and it gets very complicated ( not to mention dangerous ). If you find the need to forge large pieces go hydraulic and make a small hammer. The 110 lbs. hammer I took apart will live again...at 110 lbs weight and a4000 lb anvil/frame. You can always take your metal down the street to a shop with a big hammer and have some operations done for you.
  6. I would make the area of the cylinder expressed in square inches ( as for example a 5" diameter cylinder is 20 " squared of area ) and use that number as 1/10th the weight expressed in pounds ( following the example 20 = 1/10th of 200 ). Some of the hammers I see have a cylinder smaller than that suggestion..I find them kind of slow..I would prefer a faster harder hitting hammer with a shorter stroke. I had a 110 lbs hammer with a 3" diameter cylinder and took it apart because I thought it was too noisy and sometimes I had to wait for the 6 hp compressor to catch up. Jan
  7. Here is the picture to go with the above post. I will try a few welds before my forge becomes my crucible furnace.....I need some feedback on this material as a starting material for blades ( folded steel blades) If it looks good I can make a few extra crucible runs to prepare some of this material.. All the wootz blades heated quenched and broken..to be use as remelt stock or steel for folding . material.
  8. I repaired 2 grinders and am waiting for some long belts ( 132") to finish a third 3" wide belt grinder. Two of these are punch presses where the flywheels are now the hard contact wheels. I have a large stone grinder in my truck which will be converted to a finish grinder where the grinding is done with a hard crust buffing wheel as seen in Murray Carter's book or maybe one of the Japanese videos. I am drying some washed ore for this years iron runs. I'll post some pics later. Jan
  9. Ric, We will just keep chipping away until we get it....I am sensitive to he use of "Master" , I have only known 2 "Masters of their trade" and they were very exceptional people....one a blacksmith ( my teacher ) and one was a ceramic artist. Jan
  10. Thanks for sharing these ...beautiful work....you can take your time healing at that pace. Jan
  11. William, That is a beautiful razor. Jan
  12. Charles, I do not understand it myself and do these experiments to learn about iron and steel. As the "Student" I have created a ferrous metallurgy lab class for myself and it has been a great experience . The problem is, each trial requires a lot of materials/time/expense and often result in "failure". This particular topic is a bit challenging because so much can go wrong. I am pretty confident I can do it , if I cannot, we will let one of the "Masters" show us how. Jan
  13. Sears $ 29.00 vac+variable trans former.... for forge , smelting, and crucible furnace. I probably buy one every 2 years. The flexible plastic hose is the problem..it has a loud whistle sound ( deafening). Replace the hose with a larger diameter hose and you are fine. I often place a paper cup over the air intake so all the air I get is the cooling air which is being pulled through he motor...this for low temperature applications. Right now mine is reluctant to run smoothly at 20 V...I can fix it ..but for $29.00 it may not be worth the time.
  14. Had about 8kg of forged "wootz" blades sitting around ...these were all at about 2% carbon and very clean in composition. Left them in the furnace ( piled ) for oroshigane , then quenched them and broke them into bits. The bits will be used to continue the quest for a blade with a nice hamon....now we are concerned with other variables affecting the appearance of the steel. The concern is, will they weld if I cannot bring them up to 1300 Deg C (above their melting point)..using straight borax they did weld on a test sample. There are two batches not of equal weight. One batch is home made steel the other is all wrought iron chain....the breaks look very similar and we will see if one looks better than the other. Now I am left with just 3 wootz blades for future use.
  15. Alan, guts of the variac a variac is a variable transformer ( varies voltage ), a rheostat is a variable resistor.