She recommended attaching the canvas so that it appears to be on the "back" of the stretcher bars, as shown below, rather than on top. This keeps your wrists and arms off the canvas, and your work cleaner. By attaching tacks to the inside of the stretcher bars, magnets can be placed on the tacks as needle holders, etc. When your work is put away in a bag, the needles and threads are protected by the sides of the stretcher bars and won't fall off. I often place tacks on top of the bars, and use another magnet to hold graphs in front of me while stitching. Another reason for "stitching in the well"....if the margins of your project are very narrow, you won't have trouble ending your threads on the back because there isn't anything in the way. Bead holders placed inside the stretcher bars won't fall off the canvas either. For some, using a laying tool in a tight corner is difficult unless the canvas is on top of the stretcher bars. I use a "trolley" type of tool--it's a long, large needle welded to a ring that I wear on my index finger. I can then curve my finger around a tight area....or just turn my canvas around for more maneuvering room.
|Canvas right side. Tacks are on the back of stretcher bars|
|Back or wrong side of the canvas. I know there are a lot of tacks, but I find they keep the canvas from stretching|
|Magnet attached to tack used as needle minder|
|This is a "framer's tool" I use to push tacks against stretcher bars. The handle is very comfortable to use.|
|Using the framer's tool to push tacks into the stretcher bars|