Last spring at the NHSW I purchased some wonderful orange Finn/Corridale roving and then at the Revival this summer, managed to get some multi-red merino roving. I decided to blend them together. Having never done this, I of course looked to Julie to figure out how to do this. She had purchased a hackle last spring and was glad to give me a lesson on it. You place some roving on to the deadly looking nails, then put a second layer on and so forth until you have the blend that you are looking for. You then pull it through a diz (piece of wood with small hole in it) and you create blended roving. Lots of fun. This is how it looks spun up.