I have some doilies that my grandmother knitted many years ago (She died in 1967, so they are at least 45 years old). They have never been starched and stretched. In fact, the ends of the fine yarn she used were never tied off. My girls would like me to stretch a few of these for them to use. I've searched the internet, and found suggestions using starch, sugar, hair spray, glue, etc.
I'm hoping someone here can give me some advice. What's the best product to use? Any tips? Also, is there a trick to tying off the ends? I've woven in ends when I've crocheted hats, but this yarn is so thin I'm not sure how I would do this without it showing.