No, she cuts 1" strip of fleece about twice the diameter of the bucket. On one side, you cut slats to thread the strip through, so you have two dangling pieces for every strip.
The chick's climb in and nestle into the fleece like they would a broodies feathers
This? Half way down the page
https://www.backyardchickens.com/t/631861/diy-thread-lets-see-your-inventions/2340