correct me if i am wrong, your design looks like a ww but with the fins discontinous in the middle and you placed a fin with a pyramid form in the middle and facing 90 degrees the other.
if i understood well, you should be able to make that with some cad in about 30 min or less.
I never went to cad couses btw and I learnt some cad with hara. we do not know much but know at least anough for us to design blocks. that should that you a lot of time, it tooks us maybe a couple of hours to learn it
