After posting my article about the K9DP BCI filter kit build, Alan (W2AEW) commented:

If you dislike winding toroids, the method I show in this video makes it a lot easier!

This is an excellent way to handle the toroid while winding. Check out his video below:

Click here to view on YouTube. 

Alan has a massive library of instructional videos on YouTube. If you haven’t already, subscribe to his channel!