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    17th century stonebow school project

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    phuphuphnik
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    17th century stonebow school project

    Post by phuphuphnik on Thu Dec 05, 2013 10:26 pm

    I'm working with my 2 7th grade students making 3 stonebows based on the design in Gallway's book.
    I'm doing the big work, and they are doing the whitework  and smithing, as well as the stocks.
    Using red oak for the stocks, 1018 for the hardware and 1075 for the prods. I'm aiming for 30-50# on the bows at 12 inch draw.
    Cutting the latch out.


    Making the ticklers


    Top: my lever, middle the prototype, lower one of theirs; unfinished.


    The prototype so far

    jeep
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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 10:37 am

    Very good idea and beautiful work. When you'll put the bow be careful to give a bit of angle  to the stock to be sure the shooting trajectory wont hit the stock, or cant a bit the bow tips upward. You look to have nice working tool !

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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 11:16 am

    Be very careful about the the bow clamp system. This may help.


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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 12:34 pm

    This picture show you what Gallwey mean "upward slant" in the stock 

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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 12:38 pm

    That way you'll be sure the ball won't hit the stock 

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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 12:40 pm

    Hope I have been clear! please inform us of your work with pictures.

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    Re: 17th century stonebow school project

    Post by jeep on Fri Dec 06, 2013 12:43 pm

    Last thing , I would suggest to do a stronger bow around 100# (can be span by hand also)

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    Re: 17th century stonebow school project

    Post by phuphuphnik on Fri Dec 06, 2013 4:24 pm

    Thanks for the replies!
    Jeep: I'd like to keep the power on the low side. The kids are 12, and while I trust them they have little experience with things that shoot. They made hickory bows, but as we know that is a different animal than a crossbow.
    Mine, however can be stronger muahahaha.

    As for the stock, I have an offset on it, that I hope is deep enough. It is certainly enough for the sling to clear. It is 2 pieces one 1.5" the other .5" with an alternating grain to give some more strength. I'm not fond of using red oak, but I have a very limited budget.

    As for the prods, I was going to temper them at 700F It is 1075 1/8" thick 3/4" wide and 28" long.
    I'll play around with prods on the prototype before they make theirs, and find a good fit.
    cheers!
    chriso

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    Re: 17th century stonebow school project

    Post by phuphuphnik on Fri Dec 06, 2013 8:22 pm

    I should add that I'm looking to use 1/2" clay balls
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    Re: 17th century stonebow school project

    Post by kenh on Sat Dec 07, 2013 1:27 pm

    But think how much fun paintballs would be!

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    Re: 17th century stonebow school project

    Post by phuphuphnik on Sat Dec 07, 2013 6:28 pm

    Evil grin

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    Re: 17th century stonebow school project

    Post by phuphuphnik on Thu Dec 12, 2013 5:00 am

    ugh, I cannot heat the whole prod at the same time, which will make tempering a little...impossible. I'm therefore making a tempering forge from an old gas grill. I'll put in a different burner too so it'll do double duty as a regular forge too. It came with a full tank too.
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    Re: 17th century stonebow school project

    Post by septua on Thu Dec 12, 2013 9:33 am

    Some links below may have been presented here before however they contain some pictures of bullet/stone bows. Be patient scrolling down and enlarge each image to get nice detail.
         
    http://armborst.forum24.se/armborst-about36.html
    http://armborst.forum24.se/armborst-about153.html
    http://armborst.forum24.se/armborst-about126.html
    http://armborst.forum24.se/armborst-about153.html
    http://armborst.forum24.se/armborst-about112.html
     
    Tom

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    Re: 17th century stonebow school project

    Post by jeep on Thu Dec 12, 2013 11:35 am

    The skill, technical and artistic level of those guy are just unbelievable! Respect man! respect...

    phuphuphnik
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    Re: 17th century stonebow school project

    Post by phuphuphnik on Thu Dec 12, 2013 11:36 pm

    wow. The learning curve just got steeper...
    Thanks for the links!

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    Re: 17th century stonebow school project

    Post by phuphuphnik on Sat Dec 14, 2013 3:21 am

    Here is the stock so far. The prod is not hardened, and not spanned. Rather I used a long string for measurements. I'll be making the irons as soon as I fix my forge. $&*@ blower broke.

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