This tool is awesome for preparing Applique or English Paper Piecig with starch and freezer paper as you may have seen on my blog. It saves your fingertip and fingernail from a hot iron. It becomes a natural extension of your finger, helping you handle your pieces. It is adjustable to fit your finger.
It also works great to offer finger protection when using sewing machinery by keeping your fingertip away from moving needles / parts.
This is a notion you can not do without!