In the past, I used to have the tool glass the same size as the mirror glass. This time, I like to experiment with a smaller tool, ie, 80% size mirror size: 406 mm tool size: 330 mm Simulation with tool on top setup: pause after simulation time of 60 the stroke length refers to tool (on top) travelling across the mirror. 135mm stroke: ( equivalent to 1/3 CoC ) xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx If the stroke is longer, eg, 155mm stroke: center is deeper ---------------------------------------------------------------------------------------------- 175mm stroke: almost flat center, then steeper slope on edge xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 195mm stroke: steeper wall is ground down xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx if stroke is shorter than 1/3 CoC , eg: 115mm stroke: center hill xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 95mm stroke; h...