Click here to see my instructions which includes sourcing of all parts for the tool pictured here, brief instructions on how to use and a link to a YouTube video (not mine) on how to use.
This is just another alternative to the Wagner Tool type knurling tools or the Sorby Spiraling and Texturing tools. Time will tell what use if any it will be best suited for. Meanwhile it is something I am experimenting with. I may have to invest in another cutter or two. As Frugal as I am, I am not sure if I could justify to myself paying the money for the Decorating Elf given the texturing tools I already have. But for less than $10, this was a no brainer.