I used a spoon, then a TJ's quick quilter, in the 1990's. The spoon made a nice, thin ridge, but the handle was too thin to hold comfortably for long. The TJ's tool was too heavy, the ridge it makes is too thick for my taste, and the handle still too narrow. I have that blue, plastic, cone-shaped thimble with the disc toward the end-OK but not great. My fav but still not perfect tool for over 10 yrs is a porcelain thimble with a smooth disc end that makes a lovely thin ridge and the hand position involved is not fatiguing. If my finger didn't get hot and smushed it would be perfect. If I ever see another, I'll buy it, because I live in fear that I'll break it. To be clear, these are all tools used under the quilt with your non-dominant hand.