How to sandwich-sew a yoke
That method is for sewing a yoke at shoulder level. The Sandwich technique is applied to collar as well. It consist in taking a piece between two and turn inside out.
Method to use to sew the bib shirt in the store.
That particular yoke is in two parts. We will have two sandwich operations. In a simple back yoke, one operation is necessary.
Lets start by cutting the different pieces