[jhein]

No offense to anyone, but I think if a person needs to ask if they should take on a project like this, then they probably shouldn't.

OTOH, if having the motor done right the first time is not the priority and you are more looking for the learning experience and don't mind too much if you have problems along the way and maybe even a motor that fails, then go for it. But, if I were gonna do that, I wouldn't use any sort of rare or valuable block to learn on.