This is two boomerang projects in one. The instructions for each are remarkable similar, and you can follow the differences in the notes on the images.
Traditional boomerangs have two forms: there are the straight, hunting boomerangs, crafted to fly in a straight line at the target, and the V or banana-shaped returning boomerang. This is the source of The Robot Returns*
Modern boomerangs have more complex, multi-armed shapes, and that is what we are going to try for in Dark Kite, an attempt at my own personalisation of a Batarang.
* A little browsing on the web reveals that boomerangs designs have to have interesting names. Robot Returns is obvious. Dark Kite is Weissensteinburg's fault, following a throwaway comment comparing me to ... somebody else...
Step 1: Materials and tools.
For tools, you will need a saw capable of cutting complex curves in your ply (such as a coping saw or scroll saw), a selection of rasps and files and sandpaper to finish the shaping. If you can, get a range of "grits", rough to smooth. Clamps or a vice of some description would also be useful.
- Or you can use what I did, which was a jigsaw and a dremel.
To finish, you will need a tough, waterproof varnish. You may also wish to paint your boomerang, or add your contact details, just in case you lose it.
- I bought a sheet of beech-faced ply from a local hobby store. With careful planning, it should be enough for about four boomerangs, which makes the raw material cost of them at around a pound each (roughly $2).