I never used split thread dubbing techniques until I acquired this tool. Now I use these techniques all the
time. This tool works very well.......... So how come only 4 stars?
The tool is not intuitive. It can be a challenge to learn to use. When you split a thread you must twist the tool. This technique is not apparent from the instructions. You should look really closely at the photos that are on the label. Once you get the hang of it some practice is necessary. Hopefully when you learn to use it you will love it (and use it) as much as I do.