My partner and I raise and show Shetland Sheepdogs. They generate a LOT of shed hair, generally the soft, downy undercoat.
I saved the (cleaner) combout hair with the intent to spin and knit with the hair. The resources I found recommended carding in some wool to allow for a slightly looser twist upon spinning (wool has scales that interlock and allow the fibers to hold together under looser tention, apparently).
Well, I could never figure out the damn spinning wheel and gave up. If anyone knows where I can send a big bag of clean dog hair for spinning, please let me know.