My slingbow

Discussion in 'New project ideas' started by ultimatelizardman, Feb 9, 2013.

  1. Essentially this is my design for a very simple and cheap sling-bow. It's not very powerful, nor does it possess impressive range but it can be made quickly from every day household items. <br><br>if you want to make one you will need:<br><br>- a stick of at least 30cm long.<br>- 20 rubber bands.<br>- some string.<br>- something to act as an arrow-guide. (I used a "sellotape ring" on my prototype)<br><br>the steps:<br><br>1. Attach the arrow guide to the stick (i used sellotape to stick the ring on).<br>2. Attach two pieces of string to the stick; one to the top and one to the bottom.<br>3. Tie ten rubber bands to each piece of string.<br>4. Attach the two pieces of string, via the elastics they are tied to, with another piece of string.<br><br>5. In the end it should look like this:<br><br><img src="http://i69.servimg.com/u/f69/18/10/72/53/slingb12.jpg" border="0" alt=""><br><span style="font-size: 9px; line-height: normal">*the space at the top is intentional and designed so that i could add various "accessories".</span><br><br>It is used like a bow; you place an "arrow" in the guide with it's notched end on the string, you then pull it back and let go to shoot.<br>(i used a simple, unfletched, wooden rod with a notch carved in one end and a blunt tip as an "arrow", mainly for safer indoor use)<br><br><br>It's not very powerful, the projectile i used will travel +- ten meters and will penetrate three or four 20X20 cm cardboard boxes or one board of plywood at five meters with a blunt, "raw-wooden" tip.<br><br>Prototype:<br><img src="http://i1056.photobucket.com/albums/t362/ultimatelizardman/image_zps461a5b25.jpg" border="0" alt=""><br><br><br><br>Also, i have three questions pertaining to future projects based on this design:<br><br>- I'm planning on upgrading to stronger bands in order to increase the power and/or range of my slingbow; i would like to know what you guys recommend.<br><br>- Would clay be able to make effective arrow-heads?<br><br>- Would it be a good idea to add a knife-blade to the top, facing forward, in the spot i left free for "accessories"?<br><br><br>sorry for the bad quality picture, i drew it in under ten minutes.
     
  2. MaddyMax

    MaddyMax New Member

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    no, it's a really nice drawing!<br><br>if you just use only 20 normal rubberbands, this is a little fun toy. the quickest made slingbow i've seen.<br><br>i would attach the knife at the bottom to stick it in the ground and use the upper end as a handle so there can be stronger bands be used (handslaps). but it has to be a long broomstick. you probably don't want to shoot it kneeling.<br><br>clay is not the best choice if the arrowheads should penetrate anything. metal, stones and glass is much better.
     

  3. Do you think lead, from melted down airgun pellets, cast into shape with clay moulds would make decent arrow heads? I could drill out a hole in the back and superglue the arrow shafts into them.<br><br>Also, do you think it would be possible to increase the power/range of my slingbow design to practical levels whilst keeping it under 60 cm long?
     
  4. MaddyMax

    MaddyMax New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>ultimatelizardman wrote:</b></span></td></tr>
    <tr><td class="quote">Do you think lead, from melted down airgun pellets, cast into shape with clay moulds would make decent arrow heads? I could drill out a hole in the back and superglue the arrow shafts into them.</td></tr>
    </table>
    <span class="postbody"><br><br>nope. i don't think so. lead is too soft. and casting lead with clay moulds is very dangerous.<br><br></span><table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>ultimatelizardman wrote:</b></span></td></tr>
    <tr><td class="quote">Also, do you think it would be possible to significantly increase the power/range whilst keeping it under 60 cm long?</td></tr>
    </table>
    <span class="postbody"><br><br>sure, but you don't wanna hold your hand between the stick and stronger bands.</span>
     
  5. I could probably install a hand-protector onto the weapon itself, however this solution would most-likely require a redesign.<br><br>I did not know that casting lead in clay moulds was dangerous (i have literally zero experience when it comes to metal working), thanks for the warning!
     
  6. onnod

    onnod Im from Holland, isnt that weird?

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    Cool little slingbow, if you don't want handslaps, you can attach string stoppers, as seen on the shortbow joerg made
     
  7. tokSick

    tokSick Senior Member

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    Looks like a fun project. You could use nails as arrow heads and sharpen them.
     
  8. MaddyMax

    MaddyMax New Member

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    that's a simple one with string stoppers:<br><br><a href="http://theslingshotforum.forumotion.com/t2123-hunting-slingbow" class="postlink">http://theslingshotforum.forumotion.com/t2123-hunting-slingbow</a>
     
  9. I've started working on a string-stopping hand guard and a more powerful propulsion system, but I have some questions pertaining to the means of propulsion;<br><br>- Do you guys think that upping the number of rubber bands to 50 (25/25) would make my slingbow powerful enough for practical usage? should I use even more? would there be any complications?<br><br>- How would you recommend attaching the nails? I did so using "Sellotape" but it prevented the "arrow" from penetrating beyond the point of attachment when I shot the plywood board. <br>Would a small amount of clay, dried and hardened, make an effective "attachment base"?<br><br>The general idea behind my slingbow is for it to be something which anyone can make in very little time with household materials, so it would defeat the purpose to use specialised tools and/or materials in it's construction.<br><br><span style="font-size: 9px; line-height: normal">Sorry for all the questions, I'm a noob when it comes to making things.<br></span><br><br><br>
     
  10. onnod

    onnod Im from Holland, isnt that weird?

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    i think as long as you make your S-bow strong enough 20 rubberbands will not have any complications, for the tips i would drill a hole in your arrow and glue them in
     
  11. Well, I just performed an experiment with 22/22 (44) rubber bands... And I'm not strong enough to draw the string <img src="http://illiweb.com/fa/i/smiles/icon_redface.gif" alt="Embarassed" longdesc="10"><br><br>How would you guys suggest solving this problem?<br>Longer slingbow? Longer string? Add a pulley system? Build more muscle mass (lol)?<br><br>(Not forgetting all items used must be found in a normal, everyday household).<br><br><br>Update: it appears that using a longer stick and string were all that was needed, I can now use 30 bands easily which means that 40 or 50 should not be a problem.<br><br>Update 2: it developed enough force, with 40 rubber bands and a 95cm steel pipe body, to break my arrow in two halves by sending it through a cardboard box and into the metal plate I used as a backstop (which it dented). Sadly, this project will be on hold until I can get more "shafts" from the art supplies store <img src="http://illiweb.com/fa/i/smiles/icon_sad.gif" alt="Sad" longdesc="3"> .<br><br>Update 3: just got some new supplies; heavier shafts, clay, nails and a whetstone. time for some new "arrow" tests!
     
  12. My old prototype.<br><br><img src="http://i1056.photobucket.com/albums/t362/ultimatelizardman/image_zps461a5b25.jpg" border="0" alt="">
     
  13. alcatraz

    alcatraz New Member

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    use thera band <br>dont use clay try flint or ceramic <br>i dont know about the last one
     
  14. <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>alcatraz wrote:</b></span></td></tr>
    <tr><td class="quote">use thera band <br>dont use clay try flint or ceramic <br>i dont know about the last one</td></tr>
    </table>
    <span class="postbody"><br><br>Thanks for the help!<br><br>By the way, I've so far gotten good results from "arrow" heads I made from the tip of a steak-knife blade attached, via a slit, to half of a ballpoint pen filled with clay.</span>
     
  15. I finally decided to make a wooden slingbow using the same (very simple) methods and paint it in "tactical" black, which resulted in the com-bow.

    [​IMG]
     
  16. Achso_42

    Achso_42 Senior Member

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    The frame could get some curves, to make it look nice and to gain stability..
    Good work so far:)
     
  17. I'm working on another slingbow with my new tools; the next one will definitely have curves. :)


    Thanks!
     
  18. moikea

    moikea New Member

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    dental floss makes a cheap but strong cordage for attaching arrowheads,It is also good for tying wishbones into speargun rubbers etc.you could also go old school and use pine pitch and sinew.
     
  19. Camo-sling

    Camo-sling New Member

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    The first design looks cool but I would be pretty scared to shoot it! The second looks awesome too, do you suffer from some really bad hand slaps?
     
  20. Thanks!


    Not really, the long string on my first design avoids painful accidents... although i've never tried it with theraband.