I designed a lightweight indoor boomerang. The raduis of the boomerang's flight is about 1 meter. So, you can throw and catch it safely in a small room.
Boomerangs Keep Coming Back!
This is a right-handed boomerang.
If you want a left-handed boomerang, after you mirror it on x-axis(Mirror X) and then print it in Cura.
To reduce the weight, use 80~90% of the flow compensation rate(the amount of material extruded is multiplied by this value.).