I believe at that size there wont be that much power and will struggle to flip 1.5kg...2 of em will probably do it...but...if you did an Envy style front hinge then the weight to flip is drastically reduced. I think it could work. I will try it when i have the arena done. I have a big sheet of 1.2mm Ti to build something very light weight so the electro magnet size can be increased.