The half square triangle unit is probably the most commonly used patch in a quilt block -- well it is second only to the square. It is made simply with two triangles, filling up half the square each -- hence the name. Take a quick look through this website, or in any quilting magazine, and you will start to notice that this half square triangle, regardless of its size, is present in more quilts than not.
Free Quilt Block Pattern
There are many variations of the Monkey Wrench quilt block but all in all, it is a very easy block to create. Squares and half square triangles are all the units involved in the making of this block. The interest will lie in your colour choices, so don't be shy about experimenting.
Both of the sample quilts illustrated show the quilt blocks laid out on point. However, note the very different end results by simply changing up the additional elements for the final quilt.
Related ~ Churn Dash