About this 3D model

I got the "Extreme accuracy Prop/Rotor balancer" from Hobbyking but did not find it particularly accurate... I designed this to match the part you put the prop on. Works heaps better. Also large enough to make balancing a bit easier on bigger props. Size of the magnets i used: 12 x 2.9 mm ( Product number on HK: SK-2050 ) Oh... Sorry for all the fillets. I will try to controll myself next time! =)