i have less of a rudimentary understanding of what a cantalever cut is. but i'm not one to allow understanding to interfere with a good project! it obviously is a curve but (assuming here) it's not constant... how do you lay out this curve? i've tryed reading thru the description in "black bishop 351 black cat tarp" but frankly pretty well lost every time i try to wade thru that. i'm thinking about making a cuben fiber tarp that enploys a cat cut on the ridge line(aprox...3-4 inches). maybe smallish cuts to the out line too. fwiw- i'm making this tarp with the portion that drapes over the ridge line out of slightly heaver cuben ( .74 ridge about 20" wide at ends - the walls .51). and mostly glued. how do other's lay this out?..can it be done on the bench as opposed to on a computer?