Boomerang

thingiverse

This design for righthanders has undergone numerous revisions. I aimed to create one that combines excellent flying characteristics with a flat bottom, eliminating the need for bending. As a result, this design flies exceptionally well. Initially, these designs were printed in PLA, but they broke after just a few throws. TPU proved too flexible, while PETg works flawlessly - none have broken so far. It is printed as one piece and requires a table similar to a CR10 or Tevo Tornado. This design features a completely flat bottom, making it easy to print with no support required. The leading edge starts at a 45-degree angle, necessitating a slight sanding after printing to round it out. I printed mine at 40% infill and three layers of .2mm, though minor changes can have surprising effects. Unfortunately, this design demands an increased angle of attack for the last three inches of each wing. The deflection is .1 inches and begins three inches from the tip. Thankfully, this adjustment is straightforward. I placed the boomerang on a workbench with slightly more than three inches overhanging the edge. Using a heat gun, I warmed it until it just started to sag. With a gloved hand, I gave it a twist - not much force was needed. Point 1 shows what .1 inches looks like. To fly this boomerang successfully, throw it with plenty of spin and hold it nearly vertical. Throw it fairly parallel to the ground, taking into account any wind conditions. If there's wind, aim for a 45-degree angle off to the right of the wind. In very windy conditions, it's best not to bother as they don't fly well in strong gusts. If you possess a powerful throwing arm, consider experimenting with adding weight and reducing deflection.