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I Forge Iron

doc

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Posts posted by doc

  1. I would assume ( you know what that means ) That if you can draw a full vacuum in a glass bell jar then you should be able to do it in a pressure cooker. Pressure cookers generally run a 15 lb psi on their highest end at sea level. I don't know if you are at sea level or not ,but if you are the HIGHEST pressure you'll be able to exert on the outside of the container is 14.7 psi. The pressure of the atmosphere.If your elevation is above sea level then even less.

    PS There is a fellow on YT that stabilizes his wood for handles in a mason jar! 

  2. As everyone so far has told you it can't be done cheaply! Maybe so, maybe not, firstly you don't need a male and a female die, you only need a female die. For the male you need a urethane/rubber 'puck' or ball. I'm not so sure about using a jack but with a press it's doable imho. I would make up the female profile using 3mm plate(1/8")then set it upside down and place a section of pipe over it, now fill with lead,
    the lead does the same as pitch in reprosse. Now rub the inside of the mold with wax crayon. Now press a sheet of thin cardboard into the mold this will give you the aprox shape of the blank required. The 'plastic' 'puck' that you require needs to be 'squish able' (in a press) too firm to do by hand the closest that I can describe is like a 'kong' as in indestructible dog chewer. I have previously used what seemed like a really firm rubber ball to press shapes into copper using lasercut plate as a female die. Here I can go to the guys that make die-sets and buy bits of 'the right material' but I'm not sure if you have access to it so I've done my best to describe the process.

    Ian

     

    This is the method I would use and is really the only economical method for a small shop or small run of parts.

     

    My 2 cents

  3. I have no way to up load a drawing...sorry. But think of it this way, if all you had was a piece of 1/4" x 2" x 8" how would you derive that form if you couldn't forge weld but had a hot chisel?

     

     

    I'm not saying by the way that size material is what you should start with for this particular project. It's just an example from which could could make the general form desired.

  4. you BUY the alloy you wish to have, If you read in the forums, you would know one can not tell what alloy any junk yard steel is, only make guess from what is was used for before it was junked.

     

    Steve sells,

        It seems NATKOVA's English maybe better than your's considering it's your native language :) Or perhaps it's just because you were trying to beat Frosty to the punch? :)

  5. I've bent antler with boiling water and a little vinegar. I don't know what or if the vinegar does if anything but it was what I was given as instructions.

     

    Clamp the antler between plates, vise whatever to straighten. Have it hot,well soaked so the heat is all the way through and go SLOWLY. Keep a sharp eye out for beginning cracks and reheat if they start to appear.   

  6. Arc welders are "constant current" machines. The only way to control heat during the weld (to a small degree) is by varying your arc length. Bike frames should be TIG welded, not stick if that was what you were intending it for. Most (decent) frames and parts are 4130 chromoly that is post-weld heat treated to keep the area in the HAZ from getting brittle. You want a pulse arc TIG machine for bike stuff.

    -Crazy Ivan

    Not all welding processes are the same.Some are constant current and some constant voltage.

     

    http://www.lincolnelectric.com/en-us/support/process-and-theory/Pages/constant-current-vs-constant-coltage-output.aspx

  7. Jake, 

         Was my assistant here at Peters Valley School of Craft for two years. He is a young very accomplished blacksmith who at his age of 29 has experience beyond his years. Before assisting me Jake served an apprenticeship at The National Metal Museum in Memphis, worked for the Museum of Making with Japheth Howard in Canada and Glenn Gilmore in Montana.

     

        Jake has been diagnosed with a brain tumor. As of now we don't know if it is cancerous or not and have no prognoses. I'm posting this to ask for your prayers for Jake and in hopes that some of the many people he knows will see this.

     

     Thank you 

  8. Beautiful work Robert !! Seems as though pittling about suits you quite well. Keep up the hard work, the extra effort required to accomplish what you've done shines through in your finished work.

     

    By the way, the northern equivalent (New England) to  "pittle about" is Dubbing around, it's obviously not a bad thing. :) 

  9. It could be a number of things. Since you ran it with one belt with no problem are both belts coming off now or only one? If only one since the pulley is crowned the belts should be two different lengths.

     

    It could be alignment as you said or it could be that the bearing of the pulley on the LG is has finally become worn and started to wobble,thus throwing off alignment and tension both.

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