
Thread Sizes
There are round threads and flat threads. There are single and multi-strand threads. There are threads with texture and threads that stretch. There are even threads that are pre-waxed, and all come in every color of the rainbow. Telling them apart can be a nightmare. Understanding the difference will make picking the right thread for the right fly easy. In this edition we will talk about the different sizes of threads. Threads are measured in two main ways in fly tying: Denier and aught:



