Some Designs I've been playing with

Discussion in 'Show off your homemades!' started by cfellows, Jan 20, 2013.

  1. cfellows

    cfellows New Member

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    These are some different designs I've been trying. The first pictures shows pretty graphically why Pine (or whatever kind of wood Home Depot passes off as pine) is not a good choice. Luckily the fork broke on the shot and not on the draw. Wasn't wearing safety glasses and might have gotten that chunk in my eye... no injury, but lesson learned!<br><br><img src="http://s192.photobucket.com/albums/z195/cffellows/IMG_2336_zps1aeb0e5d.jpg" border="0" alt=""><br><br>Don't care so much for this one. The handle is too wide. If I rotated this handle 90 degrees, it feels a lot better. <br><br><img src="http://s192.photobucket.com/albums/z195/cffellows/IMG_2338_zpsc0cd72d2.jpg" border="0" alt=""><br><br>Here's a two piece model that still needs some shaping before I glue the two pieces together. The front to back thickness is about 1.25" and side to side is about 1". I'm actually thinking something the size and shape of a pistol grip might be about right.<br><br><img src="http://s192.photobucket.com/albums/z195/cffellows/IMG_2337_zps619b51a8.jpg" border="0" alt=""><br><br>This one is surprisingly comfortable to shoot, even in my big hands. I bought it on Ebay, cheap, then cut the forks down to about half as high as they were after putting the new bends on the ends. I also replaced the original (very stiff) bands with some Trumark tapered bands. Needs a bit bigger pouch, but it turned out pretty nice.<br><br><img src="http://s192.photobucket.com/albums/z195/cffellows/IMG_2339_zpsbf9a591d.jpg" border="0" alt=""><br><br>Chuck
     
  2. mhpr262

    mhpr262 Member

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    I made exactly the same mistake with my first "hammergrip" slingshot design. I salvaged it by cutting the handle into a long, narrow rectangular strip and then glueing on a palmswell that was exactly the width of the remaining handle. You can check out my "Bad Company" template on slingshotforums.com if you want to see how I do it.<br><br>Your fix in the third picture may feel good in the hand but if you intend to only glue that in I would be very worried about the strength of the joint between grip and handle. No way I would shoot that with anything stronger than single strand TB Blue for 8mm steel, or else I would worry about the whole fork smacking me in the face instead of just a tip.<br><br>If you drilled a really deep hole through the fork into the handle and inserted a long steel or carbon fiber rod with lots of epoxy it should work really well even with stronger bands, however.<br><br>PS apart from the engineering issues your frames are very nice. Is it your own design? Done with CAD? Looks like you are using a router with a rounding bit for the edges, very professional <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6">
     

  3. FIAAO

    FIAAO Failureisalwaysanoption

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    Very nice experimenting, resulting in nice slingshots!
     
  4. onnod

    onnod Im from Holland, isnt that weird?

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    Nice slingshots
     
  5. cfellows

    cfellows New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>mhpr262 wrote:</b></span></td></tr>
    <tr><td class="quote">I made exactly the same mistake with my first "hammergrip" slingshot design. I salvaged it by cutting the handle into a long, narrow rectangular strip and then glueing on a palmswell that was exactly the width of the remaining handle. You can check out my "Bad Company" template on slingshotforums.com if you want to see how I do it.<br><br>Your fix in the third picture may feel good in the hand but if you intend to only glue that in I would be very worried about the strength of the joint between grip and handle. No way I would shoot that with anything stronger than single strand TB Blue for 8mm steel, or else I would worry about the whole fork smacking me in the face instead of just a tip.<br><br>If you drilled a really deep hole through the fork into the handle and inserted a long steel or carbon fiber rod with lots of epoxy it should work really well even with stronger bands, however.<br><br>PS apart from the engineering issues your frames are very nice. Is it your own design? Done with CAD? Looks like you are using a router with a rounding bit for the edges, very professional <img src="http://illiweb.com/fa/i/smiles/icon_cool.gif" alt="Cool" longdesc="6">
    </td></tr>
    </table>
    <span class="postbody"><br><br>Thanks to all for the comments and feedback. Here are some additional pictures of the 2 piece slingshot I was designing. I think they will show that the resulting slingshot would be quite strong. It's made from Walnut and Maple with lots of glue surface. And, at 69 years old, I don't have the strength for anything more than single, Theraband Gold strands.<br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2340.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2341.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2342.JPG" border="0" alt=""><br><br>And, don't think this one will see much use. Need to do more designs on the grip.<br><br>Chuck</span>
     
  6. mhpr262

    mhpr262 Member

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    Oddly my own rounding bit always tears into the fork tips like that, too. I only (ab) use an electric drill in a drillpress for a router though.
     
  7. slingpit

    slingpit Slingshot addicted

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    Nice ss.I like the natural more than the bought.
     
  8. zwillie

    zwillie New Member

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    Hi,<br>I do the rounding jobs with my diy router table.<br><a href="http://theslingshotforum.forumotion.com/t2240-diy-routertable?highlight=routertable" class="postlink">click</a>
     
  9. mhpr262

    mhpr262 Member

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    Very nice ... I wish my basement wasn't already bursting with other tools and hobbystuff :-( <br><br>Router, bandsaw, welding equipment, so much stuff I want and just don't have the room for.<br><br>How did you remove the top layer of wood from the Multiplex board so that the aluminium plate is flush with the wooden surface? With the router and a cylindrical bit?
     
  10. stej

    stej New Member

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    cfellows, you made nice slingshots. I hope they shoot well <img src="http://illiweb.com/fa/i/smiles/icon_wink.gif" alt="Wink" longdesc="15"><br><br>Just one note - if you use single TBG, it will hopefully hold. Otherwise with more power I would be quite nervous, especially with the slingshot made from 2 pieces. The handle might break imho quite easily.<br>Anyway, enjoy shooting and share new beauties with us.
     
  11. zwillie

    zwillie New Member

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    @ mhpr262,<br>yes, I did it in this way.<br>I use the router about 90% stationary in the table.<br>It´s more practical.
     
  12. cfellows

    cfellows New Member

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    I've pretty much settled on this design and gotten serious about making it. It's made from Walnut which I believe to be plenty strong for this design.<br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2353.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2355.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2356.JPG" border="0" alt=""><br><br>Following is a similar design I'm doing in Apple Ply <br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2357.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2358.JPG" border="0" alt=""><br><br><img src="http://dl.dropbox.com/u/29733857/IMG_2359.JPG" border="0" alt=""><br><br>Chuck
     
  13. onnod

    onnod Im from Holland, isnt that weird?

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    Nice, apple ply sounds interesting
     
  14. Bert the Welder

    Bert the Welder New Member

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    Nice shooter!. I'd like to find some Apple ply too. Hoping it's cheaper than Baltic and in 4x8's not 5x5's.
     
  15. cfellows

    cfellows New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>Bert the Welder wrote:</b></span></td></tr>
    <tr><td class="quote">Nice shooter!. I'd like to find some Apple ply too. Hoping it's cheaper than Baltic and in 4x8's not 5x5's.</td></tr>
    </table>
    <span class="postbody"><br><br>I found mine at Lowes here in Austin. And it wasn't cheap! $19 for a 2 foot x 2 foot piece. But it is nice!<br><br>Chuck</span>
     
  16. mojo

    mojo New Member

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    Nice work and idea! I wonder if you can shoot this design in hammer grip and finger support style, did it work good!?
     
  17. tokSick

    tokSick Senior Member

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    Nice slingshots cfellows. Keep going.