joe heres the short way and this may be controversial. cut front view profile you want , then reduce limb thickness till it will start bending . for pyramid same thickness out of the fade to tips. floor tiller till you have six inches of tip movement, long string it till tips will flex evenly for 12 inches. then brace about 4 inches correct limbs to bend evenly.exercise on floor ,raise brace to six inches ,from there bend on tiller tree watch for even bend ,type of bend (elliptical or circular). and watch weight dont pull beyond your target weight at any time during tillering. keep in mind your bending profile should match your front view profile for pyramid it should look circular ,because limbs are bending according to their width. for a bow that is wide untill the last 6 to 12 inches the center part will remain flatter and not bend as much as the tips . hope this helps