BlockBase+Directional Designs
If you are printing a directional block, mirroring ensures that your finished block is oriented the way you expect. This can be confusing since you are stitching on the opposite of the paper pattern when foundation piecing.
BlockBase+ has Mirroring on by default.
Mirroring and the Key Block
When you preview the pattern before printing, the key block shows both the section key and the finished block key.
The sections key is mirrored to help you see how the sections go together. This shows the printed side of the foundation as you’ll see it when piecing.
The finished block key shows the finished block after it is sewn.
