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File previews. It has 2 layers per mm 10 in total , which makes it super strong but super expensive. It's the best there is for boomerangs, but don't worry if you can't find it. A good quality plywood from lumber stores should do nicely too. The more layers, the better. Also mind the quality, indicated by a letter. A or B are good, but BB and C are not because they can contain large knots and filled up voids.
Those weak spots will make your boomerang break easily. Trace your template onto your wood, clamp the wood down and start cutting! If you're left-handed, flip the pattern upside down later, you'll see why. If your plywood is chipping too much, use a blade with smaller teeth. Go slow, and let the blade do the cutting for you.
Once you're done, take your coarse sandpaper and sand the edges to get rid of any imperfections. This is the most important step. A boomerang comes back because its wings are shaped like those of an airplane, but less streamlined like in the 1st picture of this step. Believe it or not, but boomerangs come in right-handed and left-handed versions.
They are mirror images of each other, and the right-handed one flies counterclockwise and the left-handed one clockwise. That's why you needed to flip the pattern upside down if you are left-handed. Look at the second picture in this step to get familiar with the terminology and to choose which one you will make. The boomerang in the photos is a right-handed version. Get out your wood rasp or metal file and start removing wood with this second picture in mind.
How much you will say? It depends on a number of factors, including the density of the wood. That's why there are no guidelines printed on the template. You have to experiment a bit until satisfied. It's best to remove some wood, test how it flies, and if necessary remove some more.
Removing too much wood can't be undone, so work in a progressive manner. For example, with a 6 mm thick sheet, don't go further than 3 mm for leading edge and leave about 2 mm for trailing edge. If the trailing edge is too sharp, the boomerang will fly unpredictably. The bottom side remains flat.
When you think you removed enough wood, sand the boomerang a bit smoother especially if you used a wood rasp, to get rid of those nasty marks. Use the coarse sandpaper first, then switch to medium grit. The leading edges need some round-over.
Trailing edges are best left flat. On the bottom side, just give it a quick pass with medium grit to get rid of the sharp edges. Now your boomerang is almost ready for testing. Just one more step to go. Plywood is rarely flat, so you must check how your wings are bent. If the wings make a tapping sound, they are bent slightly upwards and that's a good thing because it adds some lift to the boomerang.
If on the other hand they make a sound when you flip the boomerang bottom side up, this might make the boomerang fail to return. There's an easy fix to that: microwave your boomerang for 10 to 15 seconds depending on the brand of microwave oven and gently bend the wings up again.
If you hear it crack, you've overdone it :- If your wings were upwards way too much, you can bend them down a bit. The differences are very subtle. If the bending is very noticeable without a flat reference surface, you've probably overdone it. This is it: the moment of truth.
Test your boomerang to see if it needs further adjustments. Of course you'll need to know how to throw it first:. Step 1: Find a big open field with soft terrain like football field, park, beach etc.
A boomerang easily goes out 25 to 30 m 27 to 32 yards. So make sure you have enough space around you in every direction, and no bystanders in the way. Step 2: Determine the wind direction e. In other words, if the wind comes from 12 o'clock, throw somewhere between 1 and 2. For lefties, throw somewhere between 10 and 11 o'clock. Step 3: Hold the boomerang between thumb and fist with the profiled side facing you.
Doesn't matter which arm you grip. It's a matter of preference. Step 4: Throw pretty vertical with a slight inclination to the right to the left for lefties. Never throw horizontal like a frisbee! Step 5: Throw with lots of rotation. That's what makes it come back to you, so you can never have enough spin.
If it wants to do an extra loop, you probably threw it too hard. Step 6: It will come back horizontal.
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