The Plus Sign Quilt Block has become extremely popular over the last decade, finding it's way into many modern designs. Plus, (pun intended!) it is frequently seen in baby quilts.
The block is designed around a 3 x 3 (or nine patch) grid, but can be easily simplified by combining one row of squares into a rectangle, a huge time saver.
Striking designs can be created by using a limited color palette and randomizing the placement of the block on the quilt. The block also renders well in scrappier designs with broader color schemes. If you isolate the design with sashing, the plus icon pops out and is accentuated, while a layout of mono-colored Plus Sign blocks without sashing creates a unique lattice effect.
Although the Curvy Log Cabin Quilt Block is constructed exactly like a regular Log Cabin Quilt Block the visual effect is very different. What makes this block different is that slightly smaller width strips are used on one side of the block so that when four blocks are grouped together the illusion of a curve is created.
Below is a quilt I made with this block:
The 4-patch unit is thought to be one of the simplest constructions in quilting. It is based on a 2x2 grid as shown in the example block above. Most units are formed by attaching two squares together, then attaching another set of two squares.
A more efficient way to make four-patch blocks is with strip piecing. Sew strip sets with two long strips of fabric together, then sub cut those strips into the correct size to form your two-square units.
If you are careful to press your seams in opposite directions, you get a nice little nesting effect where the seams meet up. As you assemble the pieces together to sew them you can actually feel where the seams nest.
It is also possible to construct a 4 patch unit based on a diagonal grid, like below:
In this case, you sew together the two triangular units on each side of a diagonal line through the grid, then sew the two sides together. The seams in the middle still nest like they do in a regular 4-patch.
Any block where you are able to visually cut it in half horizontally and vertically into a 2x2 grid is still basically a 4-patch. Sometimes, you might have to examine the block before you see it. Below are a few examples:
To make any 4-patch construction lay flatter, try collapsing the center seam. Instructions are found at the bottom of the 4-Patch Unit page.