The current blade handle forces the blade into my index finger and almost all the cutting force from my hand is delivered to the blade from just the pushing motion from my finger (orange circle in below image). The red line in the below circle shows the line of motion from the blade, relative to the position of all my fingers and my palm of the right hand. I used Crayola Model Magic first to get an imprint of my hand and see what a natural grip looks like if it conformed to all the contours of my hand. Model Magic was chosen because it provided the necessary firmness to hold the negative shape of my grip to give my design a baseline.