This is the fastest way to sew half square triangles, or HSTs, when making them 2-at-a-time!
Follow this tutorial up with how to trim HSTs - https://suzyquilts.com/how-to-trim-half-square-triangles/
Fabric: Evolve by Suzy Quilts for Art Gallery Fabrics
Quilt Pattern: Planetarium: https://suzyquilts.com/product-category/quilt-patterns/
Sewing Machine: BERNINA 770QE