Originally Posted by
Crqltr
This is the way I was taught also, never cut the corner off your large square only middle layer from the small corner block. It gives you the tru block to square it up.
I agree with Auntpiggylpn. This is one I made using that method:
[ATTACH=CONFIG]344954[/ATTACH]
I also used a nine patch between the blocks and a 10 minute block in the border.