qbquilts is correct - in order to get a 12" block, you'd have to cut the individual squares at 1.71 inches, and I don't even want to TRY to figure out what size to cut the HSTs at! The math just doesn't work.
However - if you REALLY want to make it that size, here are some templates I printed from EQ for you. Good luck!
[ATTACH=CONFIG]341717[/ATTACH]
[ATTACH=CONFIG]341718[/ATTACH]
Last edited by Peckish; 06-12-2012 at 07:03 PM.