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    Plow Disks as Prod Material

    OrienM
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    Plow Disks as Prod Material Empty Plow Disks as Prod Material

    Post by OrienM on Thu Aug 14, 2014 9:25 am

    Howdy Folks,

    In my search for steel to make prods from, I have come across what may be a useful source, which I wanted to share with the forum. I live in a very rural area with a lot of farms, and come across plow disks (AKA harrow disks) fairly often. I'm referring to these things here:

    Plow Disks as Prod Material Images?q=tbn:ANd9GcRiHLijF206jjzx6ZZWocFnZco0wVBk6tIAoy45RrI-QpqwL3oBVg

    I'll admit, I've only played with one disk so far (and the prod I cut out had poor geometry with no tip rise, and ended up not being used  scratch), but the steel itself seemed an excellent prod source.

    These disks come in various sizes up to 36", and are generally 1/8" thick, medium carbon steel with a good spring temper. The arched shape automatically produces a good bow pre-bend, and unlike vehicle springs they aren't subjected to bending stress thousands of times.

    In any case I plan to do some more experiments with these; a neighbor has a huge pile of old 16" ones. 1/8" is a bit thin, of course, but for pistol-bow or loose-laminate style prods I think these show a lot of promise.

    Happy cross-bowyering to all Very Happy ,
    -Orien
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    Post by Todd the archer on Thu Aug 14, 2014 5:57 pm

    Well if going that route why not not try a spring harrow for material?
    OrienM
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    Post by OrienM on Sat Aug 16, 2014 8:38 am

    That's a good suggestion; I'll have to keep my eyes open for one. All the spring harrows I've seen locally have had smallish, round tines, rather than the nice thick, flat ones. Might be because of our rocky soil...the disks on the other hand are very common, most farms around here have a pile.

    I doubt I'll do anything with the disk material until I can finish a decent-weight, fully forged prod (in process  Very Happy ), but I keep thinking about making something small, maybe a pistol-slurbow, based around a small, disk-steel prod. (I kind of wish I could keep my mind on one project at a time... Rolling Eyes ) I'll report back eventually how it works out, though.
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    Post by Nick D on Sat Aug 16, 2014 10:51 am

    I have a big pile of old flat spring tooth harrow tines, they are excellent steel.  They forge very well and heat treat well.  They're pretty common around here, on old machines and such.
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    Post by Nick D on Mon Aug 18, 2014 2:13 pm

    Orien, check out this source for tines:

    http://www.gaequipment.com/Italian_Heavy_Duty_2_Hole_Rake_Tine_p/rr1803.htm
    http://www.gaequipment.com/Heavy_Duty_S_Tine_p/sc002.htm

    They don't say if the s-tine is 5160 so I'm going to contact them to find out.  Both are a pretty decent size piece of metal.

    (ETA: I just got off the phone with them, he didn't have the specs on the S-tines but said they were spring steel, at that price I'll probably get one to test.)
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    Post by robertgrossi on Sun Nov 16, 2014 11:53 pm

    I have got quite a collection of chain harrows for light cultivation and spring harrows for the more aggressive ones. They have excellent quality steel and are very prevalent in my area. Go here at http://www.amfsteel.com/ and take a look at my collection..

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