As a test i have used the cube projection now, and it really worked out well.
I am using Unity to make the AR scene.
There was only 1 downside, the 3D model gets projected partly inside the cube, like the cube is really there, blocking off the parts you shouldnt be able to see.
for some AR scenes this is what you want, but for others (the one im experimenting with currently) it is not.
Is there some way, i can make it not blocking sight on the parts that are inside the cube ?