I finally managed to get the channels for the bones sewn. I sewed 3/8 inch channels on both sides of the seam using a mystery foot that came with my machine as a measuring guide. Does anyone know what this foot is designed for?
Normally I grade all seam allowances but this time I didn't because I'm using them as bones casings. The seam allowances are 1/2 inch wide and the channels are 3/8 so the bones will sit between 4 layers of fabric. Here's a backlit picture that clearly shows the construction.
The narrow horizontal shadow near the top is the waist tape and the wider vertical shadow is the center front where the busk will be. I made one silly mistake when sewing the channels. I sewed the channels along the center back and realized I forgot to insert another layer of fabric so the grommets have something to grab on to. The linen is so light I'm afraid they'll just fall out without a little more bulk, but now I have very little room to maneuver fabric in that last panel. Has anyone else done this? Any suggestions as to how to solve it?