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Make a working boomerang!

Step 1: Does it actually work?-Yes!

In order for you to be willing to build your own, you probably want some assurance that it will/can work.
I teacher engineering in high school and this is a project I do with my classes. If a ninth grader can build a working boomerang so can you. Still don't believe me, take a look at the video proof. (Note the plans are for a righty, the student in the video is a lefty he reversed the plans so it would work for a lefty.)


<p>I traced the outline in Inkscape from the PDF into SVG in case anybody would prefer an SVG file (might be handy for CNC, too, but you'll need to remove the wavy cross-hatch, which I included to make it easier to fit together printouts accurately since it won't fit on a page). I didn't mark the airfoil edges. http://pruss.mobi/dl/wishbone.svg</p>
<p>I made one. Admittedly, mine was scaled to 3/4 of the full size in the plans, because I only had 3/16&quot; plywood rather than 1/4&quot; plywood. However, it doesn't return to me.</p><p>Typically, it comes back to a position about 15 feet to the left of a bit forward of me. (I tried a variety of angles for throwing, ranging from vertically to 45 degrees tilted to the right and I once managed to get it to come back far overhead and land about 20 feet in back of me.)</p><p>I don't know if the problem is with my throwing technique or with the boomerang. Does anybody know if my problem sounds like a problem of too much lift or too little lift?</p>
<p>1- I'm going to assume that you're right handed, if you're left handed you need to reverse the direction you're throwing, the hand you throw it with and the boomerang airfoil.</p><p>2- face into the wind or a little to the right of into the wind, so the wind is coming from your front or left (how much depends on your throw, how much space you have and how well built your boomerang is), having it come from the left helps it return further to your right, having it come from the front makes it go further back</p><p>3- Most boomerangs want to be thrown about 45* to the ground. More upright makes it return faster but also makes it drop faster so you need to throw it harder and higher</p><p>4- The harder you flick your wrist the faster it spins and the more the airfoil works causing it to turn faster. <br><br>Experiment with 2, 3 and 4 till it's returning, a small change in any of them can make a significant change in how your boomerang flies. You already have some idea of what you were doing and your results so you could start from there. Since I don't know that I would probably start with the wind coming from about 45* to my left, throw the boomerang 45-50* to the ground and flick it pretty hard with my wrist (most boomerangs have a fairly high wing loading so they do not return fast, you need more room than you think to make it work, although I used to make very light ones from yard sticks when i was a kid that would return in the space of a lot of suburban yards with a hard flick and a good throw). Once you adjust 2, 3 and 4 so it's coming back at you then adjust how high and hard you throw it so it actually makes it back at a reasonable height.</p><p>Simple.</p><p>Really, unless you have a lot of space, practice and a very repeatable throwing arm you're likely to spend a lot of time chasing it. My best advice is to find some small kids that like to chase flying things. My twins will go and bring back small airplanes for an hour or more while I tweak wings and tailfeathers till it's flying like I want it ;-) (dogs don't work..., my 100# rescue will try to eat most &quot;sticks&quot; small enough for me to throw ;-) )</p>
<p>Thanks! Most of the online information suggested less of a tilt to the right, more like 15 degrees rather than 45. </p><p>I take it that there is no way to get a return in windless conditions?</p>
<p>The tilt changes how much they will try to turn before they flatten out in their flight, the closer to vertical the more they will turn, the rounder the flight path is, the closer to 45* you get the tighter (less circular) the trajectory becomes on a boomerang with a lot of lift to weight, and the longer overall the path becomes on one with less lift to weight. Throw it too flat without a ton of lift and it will not likely make it back no matter what you do.</p><p>Most will return find in windless conditions, the point was more how to use the wind to your advantage.<br><br>You know, the funny thing is that I made 2 boomerangs of a design that I came up with when I was a kid (well before you could find everything on the internet,,, well before the www) and went throwing with my 4y/o twins yesterday afternoon. I realized how much better my understanding of aerodynamics is now as well as my ability to build things. The end result is that these had much more lift and were very much lighter than what I build as a kid, which in a way was better: I could get them to return in a roughly 20-30' space, even made of wood and having tip to tip wingspan of 21&quot; (yea, they're big compared to most), or I could throw them harder and make them go out to about 50' or so, but at that point they were so light compared to the available lift that they were hard to make return as consistently (with the smaller loop after about a dozen throws I got it down to where I or one of the kids would catch it almost every throw). What I realized was that my original instructions were more centered around something that has lower lift to weight ratio. When you have something with more lift relative to it's weight and more self righting as you go less vertical/closer to 45 it will climb quickly, going almost straight up at it's furthest point from you changing the flight path dramatically.</p>
<p>thnx man</p>
<p>thnx man</p>
<p>NIC Ya</p>
If you're just interested in buying one, this is a very good website to browse http://www.boomerangsbyvic.com/products/?ap_id=Beatleball#sthash.auRJGuMt.dpuf <br>the owner has a youtube channel where he showcases the products to http://www.youtube.com/user/supergooddeal?feature=watch
Um incase you haven't noticed other boomerangs do come back you just have to throw it right
Um incase you haven't noticed other boomerangs do come back you just have to throw it right
nice !!!
I hope this works. :) If I am not allowed to post this plan, please delete this comment.
wow<br>
Great Work &hellip; <br>As the video shows this boomerang will definitely come back.<br>But and essential question remains : when ?&hellip;<br>For instance is it able to catch the 7.45pm train to Newark transfer at Columbus and get there on time for dinner ?&hellip;<br>This is an important question as you all know that respect of schedules and rituals such as family evening meals are the bond of a civilized society.<br>No ?<br>Why no ?&hellip;<br>Cheers all !&hellip;
like.
I'll just bet that you are an excellent teacher. If I had a teacher like you I think my life may have been signifigantly different. Keep up the good work. And yes, it does make a difference.
And yes, it does make a difference. <br> <br>What?
What makes a difference? Being a great teacher. One that not only teaches but also engages the minds of the young, providing an environment that fosters a love of learning.
I built this boomerang when the magazine first came out. I live in a place where you can't get that fancy plywood unless you order it, so I built it out of ordinary plywood. When I was finishished my son and I took it down to the football field. Since he's younger than me and can move faster I let him throw it. When it came back he didn't see it soon enough to get completely out of the way and it made a big gash across his shin and broke the 'rang in two. this things are mean if your'e not careful.
today at p.e. i found this random piece of what i think was table wood and started to throw it around.....didn't come back but u just had to go about 10-30 feet to get it back...
for further reading check out this guide on <a href="http://www.australiasouvenir.com/pages/How-to-throw-a-boomerang.html">how to throw a boomerang</a> it very detailed and i learned how to throw from this guide<br> jess
lol sucks i dont got big fancy tools :/
You could do this with a hand coping saw and some sand paper. (A rasp would make the bevels come out faster than just sand paper though.)
I downloaded the plans but they came out only half of what they should be. I actually downloaded them twice.
This is cool! I must try it out when I get power tools. Just wondering, but if I throw this straight forward and hit someone in the head with it, will it come spinning back?
No but the guy will!
no
Aww man. Now I can't be Link. =P<br/><br/>You'd think, though, because of the reverse force, that it would.<br/>
that person would have to have a really hard head for it to work XD
i couldnt even c the boomerang wen he threw it but thats still cool
in the vid when it came back did it hit that guy lol?
cool!!!!!
boomerag are usd for hounting birds
pleace tell me this boomerang's span is -------?cm,thank you.<br/>
tell me this boomerang's span is -------?cm,thank you.<br/>
i like this boomerang thank you
i just made a aluminum one with this instructible, it works very well so when that beast curves for the return i run like HELL!
With aluminum sheet metal, I presume? Too bad it's not made of soda cans...
actually its made of a aluminum bar, ill tell you though, i thew it only 5 times and on those throws something broke.
check out my boomerang <a href="http://www.instructables.com/id/mini-bristol-board-boomerang/">http://www.instructables.com/id/mini-bristol-board-boomerang/</a><br/>
check out my boomerang. <a href="http://www.instructables.com/id/mini-bristol-board-boomerang/">http://www.instructables.com/id/mini-bristol-board-boomerang/</a><br/>
Nice instructable. The fun in a boomerang is definitely having it come back. Funny story though, I used to work with an Aussie and we asked him how you're supposed to throw a boomerang so it'll come back to you. With a deadpan face and Aussie accent he said..."If you throw it right, it's not supposed to come back". At that point we dug up that tidbit of information that we read somewhere sometime that said that a boomerang is actually a hunting tool. Throw it right, it knocks out the animal you're hunting and it doesn't come back, duh. mmmmm....Vegemite
Like most Americans have never seen a bald eagle, most Aussies have no clue about boomerangs.There is a stick called a Kylie, sometimes called a nonreturning boomerang, which is similar to a boomerang. The shape of the blades are similar, but it does not return. Instead it travels further and more accurately then a plain old stick which makes it a good weapon. There is some suggestion that boomerangs were used to flush out birds. but thats really not confirmed. Designing a boomerang that is a weapon is not that smart a thing. Such a device would have two major properties; 1) It would do damage to what it hit, 2) it would come back to ( or at ) you. See the problem with this?
If you throw it right it knocks out the animal your hunting and falls to the ground.....
boomerangs are way too light to actually do much more damage than maybe a little bruise. they weigh about 2-10 ounces. your thinking of a hunting stick. those are sticks that kind of look like a boomerang and weight about 2-10 lbs.
I wish I had the tools to do this.
Foo.<br/>I just wrote a long description of materials, and lost it. Time to try again.<br/><br/>First off, where to get wood.<br/><br/>The first place to try is your local arts and craft store, or hobby store.<br/><br/>Much depends on how serious you are.<br/><br/>If you only want to throw it a few times for an hour or so. Either go with a paintstick boomerang or get a 3&quot; sheet of basswood and one of the more simple plans, make each blade seperately and glue together using lap joints.<br/><br/>If you want to fool around for a weak, or maybe us it a couple of times a year. Either get plywood mean for underlayment ( good woods are luan, okume, birch ) or get plywood from a hobby shop. It should be 1/4&quot; thick and at least 1'x2'.<br/><br/>If you get serious, get finnish birch. Do not get baltic birch. Boomerangs need to be bent to get best preformance. You do this by softening the glue in a microwave then bending before it hardens. The glue in baltic birch will not soften. This is generally no great loss since I don't know of a lumber yard that carries baltic birch but not finish birch. The porblem is that you have to buy a whole sheet of finish. Often times you can by a quarter sheet of half sheet of baltic. ( A sheet is 4'x8' ). A full sheet is four years worth for me.<br/><br/>Another variation on wood are strip laminate boomerangs. They are exactly what they sound like. I will let you read up on them on your own.<br/><br/> An alternate to wood is plastic. Plastic generally works well but if you use electric tools you have to be carefull not to melt the plastic. <br/><br/> Whatever plastic you decide to use a good source is, <a rel="nofollow" href="http://www.mcmaster.com.">http://www.mcmaster.com.</a><br/><br/> The main plastic that I use is polypropylene ( since most of the booms I bought are from the same material ). The plastic of choice for general boomerangs is ABS, and for sports boomerangs is Paxolin ( especially &quot;MTA&quot; boomerangs ) but styrene, polystyrene, pvc, pvc foam, acrylic etc are all usable. You just don't want something too flexible. <br/><br/> If you do use a plastic, it is nice to get one that is clear or translucent. It gives some nice visual effects when it catches the sun.<br/><br/>One warning, if you make booms out of Paxolin, make sure to use a respirator. Paxolin dust is nasty to beathe.<br/>
Ok. It looks like the second PDF is a mistake. You don't get the whole plan.<br/><br/>This particular boom looks like an old commercial one called the &quot;Tern&quot;. It was reputed to be a very good beginners boom.<br/><br/>The goldmine of designs is:<br/><a rel="nofollow" href="http://www.kutek.net/boomplans/plans.php">http://www.kutek.net/boomplans/plans.php</a><br/><br/>But the site has a serious flaw. They only include plans no descriptions.<br/><br/>Three other good places are:<br/><a rel="nofollow" href="http://www.boomerangpassion.com/plans/index_en.php">http://www.boomerangpassion.com/plans/index_en.php</a><br/><a rel="nofollow" href="http://www.rediboom.com/englisch/bauplane/index.html">http://www.rediboom.com/englisch/bauplane/index.html</a><br/><a rel="nofollow" href="http://www.mrdunston.com/boomerang/">http://www.mrdunston.com/boomerang/</a><br/>they include descriptions ( like what wind they like, their range, their hover etc).<br/><br/>Aside from the plans here I would recommend &quot;le A&quot; <br/><a rel="nofollow" href="http://www.boomerangpassion.com/plans/plans_en.php?id=6&amp;langue=enand">http://www.boomerangpassion.com/plans/plans_en.php?id=6&amp;langue=enand</a> or the &quot;mini tripale&quot;<br/><a rel="nofollow" href="http://www.boomerangpassion.com/plans/plans_en.php?id=4&amp;langue=en">http://www.boomerangpassion.com/plans/plans_en.php?id=4&amp;langue=en</a><br/>

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Bio: I teach shop. I love the fact that this website is all about people doing this on their own. Most people today are too materialistic ... More »
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