So I'm planning on building a box with a concrete edge cause grinding concrete is fun as hell. I was thinking I would just modify
these plans (which I have used before) so that there is a 2 by 2 inch square seat on the edge for a 2 by 2 concrete piece to sit and be affixed. Basically I'm going to modify
this but instead of round pool coping on a ramp it's a square edge on a ledge. Has any one done this before?