This is another basic building block for a ton of blocks. The math behind how to figure out how big to cut the squares is pretty easy. If your finished patch is to be 4” square, cut the squares at least 4⅞” square.
The Nine-Patch quilt block is probably the most used block in the quilting world. It is very easy to sew and sooooo many blocks use the nine-patch layout in construction. We'll go over a few different ways to construct the block.
The hourglass patch/block goes by several names – quarter-square triangle is a more common one. It starts out as a half-square triangle patch so the first part of this tutorial is much the same as my post on that subject.