Thanks! I forgot about the unbalancing.
I wish the open source washing machine projects actually took off. From what I remember they were created mostly to help poorer nations, which is a good goal. I've had to hand wash in the past and it was awful. So slow, boring and annoying. And you either have to wring by hand, which ruined several underpants I had, or you have to let the clothes dry naturally, which I didn't try. The hand washing videos say to lay the clothes on a towel, but I didn't have a whole free room to lay down all the clothes, so I wrung them.