When you've got a bunch of half square triangles to make, this is the technique for you. You'll be able to make eight half square triangles at a time. The triangles will be slightly oversized after you are done sewing and pressing so that you can trim them down with your handy dandy Tucker Trimmer.
The Non Mirror Image Combo Units shows you the process to make four identical combination units all at once. This process is invaluable when you're making pinwheels or any block for your quilt in which you want all the blocks to "spin" the same direction. And just like all of our other techniques, the units are made slightly oversized so you'll be able to trim them down to perfection using the Tucker Trimmer.