Caveat first: This post may not be suitable for all visitors. Do not progress beyond the fold if you are queasy.
One of my favorite sewing books makes no mention of fabric at all. Called Facial Flaps, Biomechanics and Regional Applications, it describes procedures for facial skin reconstructive surgeries. This title is out of print; others aren’t but these don’t have the “search inside this book” feature enabled which I can’t tell if it is a boon or a downside. There’s also a website on the topic, reiterating the caveat.
The reason I find the text so riveting is the explanation of stressors and tension redistribution; there are similar attributes with regard to garment making. As with garments, there are certain limitations with respect to suppression (e.g. darting). For example, the comparative of the limitations of the scalp are analogous to the primary range of motion. There’s a limit to give in the region. Therefore, the load must be spread. Here’s an example (below, figure A):
The oval represents a missing flap requiring reconstruction. The structure of the scalp is such that one cannot simply stitch opposing sides together. Rather, a second cut further up in the scalp is made (below, figure B).
Then the first flap is stitched. Load spread, the second is then closed (below, figure D).
There’s all kinds of examples of dispersing tension. While not generally applicable for most of our purposes, I have used some concepts in bias. I’m also wondering if these couldn’t be applied in leather garments being flesh. Here is another interesting example (there are lots of tension dispersion diagrams in the book).
For the full effect, the text reads:
Should I leave well enough alone or would you like more? I find the concept of back cutting compelling (below, full size 700kb)…
I can handle looking at drawings. I doubt I’d be this interested looking over a surgeon’s shoulder.