I find that I can cut longer pieces at a time if I use this thread conditioner. The ends don't fray or tangle as easily when they're conditioned. I picked some up on a whim once (the little blue box is adorable) and it was a great find. It's created specifically to treat thread and help extend its life. Unlike wax, Thread Heaven does not melt or freeze and protects against UV rays, mold and mildew. Can be used on thread for both hand and machine sewing. It's acid free, non-toxic, washer/dryer safe and can be ironed.