Wouldn't it be too heavy to come back?   

i guess if you are strong enough it should work.

Why not just add a metal edge to a wooden boomerang? You get the benefit of a sharp edge while maintaining a lightness in the wood.

Make a big shield from a wide piece of plywood!

shape it right and use thin enough metal and there'sno reason it shouldn't be lighter and more effective than a wooden one. Of course you only get the extra effectiveness by thoroughly sharpening all but the section you hold to throw. So coming back could be dodgy lol

A traditional boomerang hs to be heavy enough to take out  a kangaroo, so it's no lightweight.

Chainmail? But that would only protect you against cuts, wouldn't it?  I'd think it would still break your bones.

I'd say "no", unless you had a special Boomerang-Sling(TM) or did the boomerang in the pouch some special way that would make it spin when it was released.

yes

Hello Everybody ,
                            This something that i've thought about but never actually made. A returning boomerang can be made out of a variety of materials and be of nearly any conceivable shape. And a returning boomerang can be made from 1/8" steel or aluminum.
     Even wood or plastic boomerangs can be very dangerous and cause serious injury. The number of first time throwers who forget to watch the boomerang and track it, and then get hit by it returning is greater than you might think. I know it sounds like a cartoon, but i have seen it and actually done this . I can tell you for a fact that catching even a rather light weight boomerang with your head is sometimes enough to drop you to the ground.
     The edges of a boomerang, *any* boomerang, do not have to be honed to a razors edge to cut. It has more to do with the speed at which it is traveling ( possibly as great as 100 mph ) and the force being applied to the small surface of the forward edge.
     Also, a boomerang made from either steel or aluminum, if it is smooth surfaced ( not even "mirror" polished ) just sanded to a satin finish, as it spun would reflect light and color around it and would be nearly invisible. Unless it caught and reflected a flash of light, you wouldn't see it at all. And a general rule is that if you see it after losing track of it, it might be too late to avoid.
     About ten or more years ago, i went to a Celtic Festival in northern Virginia. I had taken a large ( 36" ) boomerang with me, and before leaving wanted to throw it. So i walked out on a huge field; 200 feet in and the closest person was a football field *behind* me. I choked up on the throw at the last minute, not putting the final "snap" to the wrist.
     Glad i did. This was supposed to be a non-returning hunting or war boomerang, and i had shaped the airfoil accordingly. But i didn't know a few things; like, you throw a non-returner horizontal to the ground, not vertical like a returner.
      The boomerang left my hand and traveled straight as stretched string for about 150' before it started to turn to the left and climb. At about 250' and somewhat off to my left, at its highest flight point ( maybe 50' of the ground ), something happened -best as i can describe it , it appeared to flicker or writhe in the air.
      It made an abrupt turn, nearly a hairpin and came screaming back, passing me on my left, traveling about 3 feet off the ground, or about head height to a toddler. It passed between two lines of people about a hundred feet apart, and disappeared onto the ground about 300' *behind* me.
     During its return flight i was offering up prayers to every God and Goddess known that it wouldn't hit anybody. Beings as this was Virginia, i feel my choices were either Lynching or Law Suit. And i have no doubt in my mind that had it hit someone, that it would have seriously injured or killed them.
     What i learned from this is to testfly everything on an open field with a minimum of a football field of empty space in every direction, and never to throw when there are people nearby. Most boomerangs do not have this range, and i have never duplicated exactly the same results. But as general guidelines, better this than haven to explain why that person down range has a boomerang imbedded in their skull.