I found this block that I would like to make but am not sure how to do the math so that it comes out to 12 1/2? It’s an 8 inch block so reason tells me if I increase it by approx. 1/2 as much, but not sure how to account for that last 1/2 inch. Is it possible or should I give up on this one?
https://www.polkadotchair.com/sweet-...lock-tutorial/