Synthetic Materials

Discussion in 'General Slingshot Discussions' started by 3bears, Nov 7, 2011.

  1. 3bears

    3bears New Member

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    evening gents,<br><br>I'm after a bit of advice when it comes to the materials front.... <br><br>G10 being pretty much un sourcable for what I need (well cant find any on-line anyway...)<br><br>Joerg has given me the thumbs up to use his Cougar as template frame, I intend on making a scaled down, and slightly modified version out of a light weight synthetic material, ideally some kind of 'tougher than nails' plastic.<br><br>ideally I'm looking at the board section being a good 12mm in depth, but I'm unsure of what material would be suitable at that thickness to be safe- I dont want to just use a bit of acrylic to have a fork snap and rip 1/2 of my face off.<br><br>on the plus side, I'd also like the material capable of taking a Craylon camo Paint job (spray Paint)<br><br><br>any input would be greatly appreciated chaps!
     
  2. Kyl

    Kyl New Member

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    What about some homemade Micarta. Like this guy. <a href="http://www.ramanon.com/forum/showthread.php?32113-Multicolor-homemade-micarta" class="postlink" target="_blank" rel="nofollow">Homemade Micarta </a><br>I've always thought that stuff looks great. You could even make it from camo cloth. ? Just a thought.<br>It seems G10 and Micarta are very similar. G10 is glass fiber and Micarta is some sort of textile fiber. one uses polyester resin and the other uses epoxy. I think I'd rather use the epoxy because polyester stinks. If you made your own you could call it G11. Ha!<br><br>Or you might look on Ebay for HDPE sheet.
     

  3. CEZ

    CEZ New Member

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    That is a nice material, nice I say! I'd use that if had access to such a press.<br>Think I'm getting a knife fever again after those pics:)
     
  4. Kyl

    Kyl New Member

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    Instead of a press you could use a hand full of C-clamps, or you could fashion a frame from wood lumber and use a car jack for the squeeze.
     
  5. porcelanowy

    porcelanowy New Member

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    Yellow <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br>I haven&rsquo;t use it but it looks good:<br><a href="http://www.ebay.com/itm/G10-FR4-Epoxy-Laminate-Sheet-1-4-x-9-375-x-15-25-/110728383333" target="_blank" rel="nofollow">http://www.ebay.com/itm/G10-FR4-Epoxy-Laminate-Sheet-1-4-x-9-375-x-15-25-/110728383333</a><br>Cut it in half, glue it together and you will have a lot of stuff to play with <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br><br>If you can make home made micarta&hellip; well only your imagination is a limit <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br>Two compound epoxy and linen shopping bags (before final polish):<br><a href="http://www.fotosik.pl/showFullSize.php?id=a342bc34eb99f072" class="postlink" target="_blank" rel="nofollow"><img src="http://images38.fotosik.pl/72/a342bc34eb99f072m.jpg" border="0" alt=""></a> <a href="http://www.fotosik.pl/showFullSize.php?id=8318ec0f23b77d74" class="postlink" target="_blank" rel="nofollow"><img src="http://images45.fotosik.pl/76/8318ec0f23b77d74m.jpg" border="0" alt=""></a> <a href="http://www.fotosik.pl/showFullSize.php?id=313807db98fa23b0" class="postlink" target="_blank" rel="nofollow"><img src="http://images43.fotosik.pl/76/313807db98fa23b0m.jpg" border="0" alt=""></a><br>Cheers <br>Rafal
     
  6. Kyl

    Kyl New Member

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    You might check out these folks. <a href="http://www.directplasticsonline.co.uk/" target="_blank" rel="nofollow">http://www.directplasticsonline.co.uk/</a><br><br>Hey porcelanowy, that stuff looks good.<br><br><strong><u><br></u></strong>
     
  7. RobertP

    RobertP New Member

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    I've used those Polypro and HDPE (High-density polyethylene) rods when working in plastics. Would be fun to hit people with lol. I have worked with just about all those plastics as a material handler as well.
     
  8. 3bears

    3bears New Member

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    <table width="90%" cellspacing="1" cellpadding="0" border="0" align="center">
    <tr><td><span class="genmed"><b>Kyl wrote:</b></span></td></tr>
    <tr><td class="quote">What about some homemade Micarta. Like this guy. <a href="http://www.ramanon.com/forum/showthread.php?32113-Multicolor-homemade-micarta" class="postlink" target="_blank" rel="nofollow">Homemade Micarta </a><br>I've always thought that stuff looks great. You could even make it from camo cloth. ? Just a thought.<br>It seems G10 and Micarta are very similar. G10 is glass fiber and Micarta is some sort of textile fiber. one uses polyester resin and the other uses epoxy. I think I'd rather use the epoxy because polyester stinks. If you made your own you could call it G11. Ha!<br><br>Or you might look on Ebay for HDPE sheet.</td></tr>
    </table>
    <span class="postbody"><br><br><br>would micarta be able to stand up to the 'innie-outie' cuts and detailing I'd be doing? also I'm a bit clueless when it comes to micarta, as i understand things, it's layered fabric, saturated in 2 part epoxy resin, and left to go solid? so I'd be able to make a 'brick' and cut and shape the whole thing as I needed?</span>
     
  9. porcelanowy

    porcelanowy New Member

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    Yellow <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br>You can cut pretty much every shape you want out of micarta. There should be no problems with the cougar design that&rsquo;s for sure. There is a lot of tutorials in the net:<br><a href="http://www.cartercrafts.com/micarta.htm" target="_blank" rel="nofollow">http://www.cartercrafts.com/micarta.htm</a><br><a href="http://www.survivaltopics.com/forums/knives-blades/3708-how-make-homemade-micarta-least-thats-what-i-call.html" target="_blank" rel="nofollow">http://www.survivaltopics.com/forums/knives-blades/3708-how-make-homemade-micarta-least-thats-what-i-call.html</a><br><a href="http://straightrazorplace.com/workshop/40286-making-micarta-scale-material.html" target="_blank" rel="nofollow">http://straightrazorplace.com/workshop/40286-making-micarta-scale-material.html</a><br>But in order to get as much strength as possible you have to squeeze the fabrick as hard as possible <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"> Clamps are OK but you need couple of them.<br>I would try with that G10 from ebay first.<br><br>Tufnol from Kyl&rsquo;s link looks like polish &ldquo;tekstolit&rdquo; which is similar to factory micarta &ndash; also tough, used for electric boards and covers, and&hellip; knives <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2"><br><a href="http://www.knives.pl/forum/index.php/topic,119066.0.html" target="_blank" rel="nofollow">http://www.knives.pl/forum/index.php/topic,119066.0.html</a><br>Cheers<br>Rafal
     
  10. 3bears

    3bears New Member

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    thanks guys I've got some solid options now, time to hit the drawing board so to speak to finalise the pattern <img src="http://illiweb.com/fa/i/smiles/icon_smile.gif" alt="Smile" longdesc="2">
     
  11. ZDP-189

    ZDP-189 New Member

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    I did a tutorial on cloth laminates <a href="http://slingshotforum.com/topic/1080-custom-cloth-laminate-tutorial/" target="_blank" rel="nofollow">http://slingshotforum.com/topic/1080-custom-cloth-laminate-tutorial/</a><br><br>We have also used G10, CF, Micarta, Paper Micarta, Acrylic, Polycarbonate, PU, cast aluminium, bronze, forged steel, etc.
     
  12. CEZ

    CEZ New Member

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    Good to know, how strong is such a micarta? Plywood strong?
     
  13. Kyl

    Kyl New Member

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    The sky's the limit with this stuff, bro. You might make some test samples. Like some little bars about 1" x 5" with the fiber and epoxy you want to use and practice your assembly technique and make sure the combo is strong enough. <br>Here are some more links to some different "how to" stuff and some cool pics.<br>I'm partial to the twisted or rolled style. Seems stronger. Also the <br>"rag Micarta" look really cool and also appears very strong.<br><br><a href="http://www.fendleyknives.com/LM105.htm" class="postlink" target="_blank" rel="nofollow">Fendley Knives LM-105</a><br><br><a href="http://www.britishblades.com/forums/showthread.php?36587-Making-Rag-Burl-Micarta-%28My-Way%29" class="postlink" target="_blank" rel="nofollow">"Rag Micarta" British Blade Forum</a><br><br><a href="http://www.spyderco.com/forums/showthread.php?t=23178" class="postlink" target="_blank" rel="nofollow">"Fruity Pebbles" Rag Micarta</a><br><br><a href="http://www.aescustomknives.com/docs/tutorial6.htm" class="postlink" target="_blank" rel="nofollow">Twisted "Damascus" rag Micarta</a><br><br><a href="http://www.britishblades.com/forums/showthread.php?129380-HomeMade-Micarta-ChiCarta-help-please-on-the-epoxy-setup." class="postlink" target="_blank" rel="nofollow">"Chicarta" British Blade Forum</a><br><br>This epoxy resin seems to be "the choice" stuff from folks who know.<br><br><a href="http://www.ecfibreglasssupplies.co.uk/p-611-west-system-epoxy-resin-a-packs-12kg.aspx" class="postlink" target="_blank" rel="nofollow">WEST SYSTEMS epoxy resin</a><br><br>Now I'm all worked up about this stuff. I guess I'll have to make some myself.
     
  14. Kyl

    Kyl New Member

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    I'd bet, with the right fiber, epoxy and lay up technique, that you could make one of Joerg's "Hammer Head" frames, no sweat. Now wouldn't that look bad ass.
     
  15. ZDP-189

    ZDP-189 New Member

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    As long as you don't press out all the resin, it can be very strong. You want a good soak in with the resin. If you can't apply vacuum, you may want to retard polyester setting.<br><br>The best thing about DIY micarta laid up in sheets (not rag fibremascus) is it delaminates, rather than snapping, so you see the failure and can ditch the frame, rather than having the fork snap off and fly into your face. See my tutorial for more details.