Wow what a great idea! I had posted in another thread about how expensive that thread spinner is. The dritz ones do not work the same way as the kwik spin that I saw. They work just like a vertical thread holder which still twists thread as it comes off the spool. Unless the thread is on the spool twisted already and it actually UNTWISTS when you sew. Hmmmm
At any rate I can't tell on my thread which is the top or bottom. They both look the same and it sure looks like the thread comes off both ends the same way.