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Jeff Amundson

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Posts posted by Jeff Amundson

  1. 1 hour ago, Charles dP said:

    For those interested in scissors, you may also like to check out Grace Horne‘s scissors (and other items).

    Grace spent some time working at Ernest Wright in Sheffield. She wrote an ebook called Making Artisan Scissors that's available on her site. It has lots of good information from history to grind angles.

    • Like 1
  2. 1 hour ago, Don Abbott said:

    I keep a couple pair of the old Japanese imports in my bench (like these)

    scissors.jpg

     

    Have you watched this?:

     

    Don, I started with small spring scissors, then went to bonsai (jointless) style. Yes, thanks, I've seen that video. 

     

    20191203_085224.jpg

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  3. These are my latest. They are wrought iron steeled with O1. The iron came from a bridge in Iowa. The cutting edge is about 3” long. They are both rust blued. I left one brown. The other I took to black. I chose this blade shape, reminiscent of a tin snips, to show off more of the iron. The iron wouldn't tolerate any punching or twisting, so the shanks and bows are pretty plain.

     

    One blade has a square hole. The pivot screw has a mating square. The nut is used to set the 'tension' between the blades. The square assures the nut rotates with the screw. I peen the end of the thread so the nut doesn't loosen. I found this pivot design on a tin snips, too.

     

    When I started making scissors a few years, I was surprised and disappointed that I could find very little information online to help me. I want to help correct that. I'll start by naming some of the barriers that might be keeping makers away from scissors.

     

    First, I know many blacksmiths who hate grinding. Scissors can require more time at the grinder than at the forge. That shouldn't be a huge barrier to the folks on this forum.

     

    A pair of scissors is a machine with moving parts. They require attention to every detail with nice fit and finish. Shearing requires a little different geometry than slicing, but again, no problem for this forum.

     

    What might be the biggest barrier is the pivot. I tried buying hardware for the pivot, but I ended up making my own. This is a true barrier that needs the collaboration of a group like this. I hope I can entice more smiths to join the fun.

    20210208_151728.jpg

    • Like 5
  4. Thanks, Bruce. It does look like the black 'bled' into the gray across the line. I learned about carbon migration in another class, this one with Mike Blue. I wondered if that's what I was seeing. Can you tell me more about that? Can I see the extent of the migration? Maybe a better question is at what point (concentration) does it become visible?

     

    Jeff

  5. I need some help understanding what I see in this axe I forged in a class with Tom Latane. I did the heat treat and final shaping at home. The body is mild steel. The bit is W1. Prior to hardening I normalized a few times, quenched in water, and tempered at about 450.

     

    I ground the bevels and hand polished to 1500 grit. At that point I could see a fine line near and roughly parallel the edge. I assumed that line to be the weld line.

     

    In the photos the axe was etched in ferric chloride for a few seconds. The W1 turned black, the mild steel is lighter gray. The line I saw before etching is still there, but it is not on the border between black and gray. That's what I don't understand. The line runs parallel to the gray, but is about 1/16" away from it. What does that mean? If that line is the weld line, why is there dark matter on the gray side of the line?

     

    Thanks.

     

     

    Jeff

    axe4a.jpg

    axe1a.jpg

    axe2a.jpg

  6. Greetings,

     

     

    I made my first knife in college about 35 years ago as I was learning to be an industrial arts teacher. I ground knives in my basement for a few years, trying to supplement a teacher's salary. I left teaching, which gave me more money to pursue the craft, but less time. I gradually outfitted a smithy, including homemade coal and gas forges and my great-grandfather's anvil.

     

    I knew I could grind a knife, but I wanted to use forging to do things I couldn't do with a grinder. I've forged very few knives, mostly because I wanted to learn how to forge well first.

     

    I'm semi-retired now. Below is what I made for Christmas presents this year, with my regards to Serge Panchenko. I started out to make my version of a Perfect Handle screwdriver. I like integrals, so I looked on this forum for inspiration. I looked at a dagger of Serge's and saw a screwdriver. I made about 10 in a couple sizes. Triple normalized, the tip hardened in oil. It was like building a knife, except I had to shape the scales mostly before I attached them and I couldn't let epoxy ooze out.

     

    I've learned a lot from this forum. This is the first time I thought I had something to contribute, and it's not a knife.

     

    Jeff

    sd1a.jpg

    sd2a.jpg

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