The MTAPrint is a 3d printed MTA boomerang (maximum time in the air)
In the contest Make It Fly
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updated April 2, 2023

Description

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I drew the MATPrint boomerang from my experience on many boomerang models in this category.  Particularly from this one : Apogee from Patrick Prady https://www.kutek.net/boomplans/boomerang_plans_img/MTA_apogee_light.JPG?fbclid=IwAR35jeXMSFYogRZkxOailxcQ-A6MOG6TnES_crvRgGrYAoFBvFL7G4_6zis

The goal of MTA boomerangs is to fly as long as possible and return to a target 50m in diameter. My MTAPrint is able to fly regularly 25 to 30 seconds in a calm atmosphere without thermal lift. If the boomerang crosses a thermal, the flight can last much longer, to the point of never finding the boomerang. Traditional MTA are made of plywood, fiberglass, bakelyte or even molded carbon. My MTAPrint is probably not as efficient as the molded MTA but with very little implementation time you get a boomerang that flies for a very long time. This boomerang is aimed at trained boomerang throwers. You also have to be patient to properly adjust the boomerang. It is necessary to raise the end of the small blade by 3 or 4 mm, to give a little positive incidence to the end of the large blade. The throw is also very technical: Boomerang in the vertical plane, 45° above the horizon, 15° to the right of the wind for right-handers. Finally you have to use a very rigid material, the best I have found is the Formfutura carbonfill. You can also use polycarbonate. Pla may be a little flexible, I'm not even talking about petg or ABS.

The stl is for right handed people. If you are left-handed like me, you have to achieve an X or Y symmetry in the slicer before printing. For printing, the boomerang must be 100% full. I use 20 walls and 10 below, 10 above.

It is necessary to sand the extrados of the boomerang to obtain a very smooth surface.

Model origin

The author marked this model as their own original creation.

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