Ran out of room. By turning these blocks different ways when set together, you can get many different patterns and have no waste. You are using 3 logs per one 7 1/2" square and if you have 30 squares and 90 logs you will end up with 30 8 1/2" finished blocks. I drew it out on paper and it reminds me of Patience Corner but its a tad different. Maybe someone can make a block and post a pix, I can't do that. Sorry.