When working on a prototype, it really helps if you have a project to work on, because it makes you work with the spindolyn in a way that is more realistic, as well a motivational.
For fun, I am working on a needle felted doll to wear some little hand spun, hand knit sweaters and hats that I have already made. I wanted her to have knitted dark auburn hair, so I chose this wool to blend to get that, do you think they will make dark auburn? We will see.
No, not dark enough, will have to add more brown. Looking at the photo in retrospect, should have known....bet you did.
Ratio-wise, I had to add twice as much as is shown in the above photo, but eureka!
I now have the right color and enough to spin for her hair, so off to the new ambit convertible spindolyn.