The Frailty of Memory -
"When I was younger I could remember anything, whether it happened or not; but I am getting old, and soon I shall remember only the latter"
- Mark Twain, a Biography
Reinforce the delicate parts of a stencil by fixing them in place with thread or monofiliment nylon, such as fine fishing line. Use adhesive tape or hot melt glue to fix the thread in place.