Bagging out the armholes of a fully lined vest can look a little confusing at first. For some sewists it may feel very straightforward, while for others it can be one of those steps that momentarily trips you up.
The good news is that it’s much simpler than it looks.
I’ve created the video below to guide you through the process step by step and show exactly how the shell and lining are pulled through and sewn together.
The result is a very clean armhole finish, with the seam completely enclosed between the outer fabric and lining.