In my experience with helping folks who have try'd to make your own drives and use oddball steppers etc becomes false economy with the end result being wasted time and money.

Good for the experience but with the same result. . Inferior performance and poor reliabilty . . ending in scrapping and buying "Proper drives an motors".! . . .BUT. . .By no means let me saying this put you off thou because it's all a good learning experience. . . Keeps you out of mischief as well. . Lol