I thought we had already answered this one? The simplest thing for you to do by far is to just buy whites from Sandhill. No matter how bad some people may say they are, it will take you longer to make the white from BB Red than it will to improve the whites you get from the hatchery. They really are not all that bad, not perfect, but can be improved with a few years of hard work. Of course you can make whites or blacks from BB Red. It will take you 5-10 years and hundreds of chicks to do it, even when using something similar like shamos, asils, etc for the color outcross. It's hard to get rid of the red in the males when trying to make whites or blacks from a BB Red. It's much easier to make one solid color into another, such as white to black, black to blue, even white or black to buff. It's very hard to take a muticolored, patterned, bird and make it one solid clean color. It can be done, but the point is, other people have already put years into this process, even if you have to wait years for the birds, and pay a fair amount for them, you will still come out ahead. I have a few whites and black both, but, none for sale now, and both are best considered works in progress. The best type is going to be in good specimens of BB Reds.
I guess to answer your question another way, you can't just make whites or blacks out of BB Red alone without essentially divine intervention. You would have to cross them with a black or white bird to gain the color, unless you were lucky enough to get a black or white sport. You'll hit the lottery before that happens, so you need to buy a black or white something to start with. Preferably a Cubalaya, but, barring that, another oriental type breed.
I guess to answer your question another way, you can't just make whites or blacks out of BB Red alone without essentially divine intervention. You would have to cross them with a black or white bird to gain the color, unless you were lucky enough to get a black or white sport. You'll hit the lottery before that happens, so you need to buy a black or white something to start with. Preferably a Cubalaya, but, barring that, another oriental type breed.