I also have Deb's Hunter's Star rulers and not used them yet. Think she has a video on youtube but don't hold me to that. Right now I'm using one of her other rulers.........winger clipper.........for my local fabric store BOM. She showed us how to make use of it so now I know. Never bothered to use it before and as I keep using it to clip dog ears I'm finding better ways to use it. I tend to purchase rulers and then put them aside forgetting them altogether till some pattern comes up asking for them. Bonnie Hunter is good in using various rulers such as the tri-rec, easy angle and companion angle rulers. Really helps me to make usse of what I have.