I occasionally use my NorVise with the automatic bobbin system when I am tying “fishing” flies. Unless you have a NorVise automatic fly tying bobbin, you may not fully understand a source of my frustration. In a nutshell, to use the automatic bobbin system, you must transfer thread, floss, wire, etc to a special spool designed for the automatic bobbin. The problem is to remember what size thread or other material is on a given spool.