Artist Nina Katchadourian tried repairing spider webs with thread, but her efforts were rebuffed: "My repairs were always rejected by the spider and discarded, usually during the course of the night, even in webs which looked abandoned."
Link (via Kottke)
The Mended Spiderweb series came about during a six-week period in June and July in 1998 which I spent on Pörtö. In the forest and around the house where I was living, I searched for broken spiderwebs which I repaired using red sewing thread. All of the patches were made by inserting segments one at a time directly into the web. Sometimes the thread was starched, which made it stiffer and easier to work with. The short threads were held in place by the stickiness of the spider web itself; longer threads were reinforced by dipping the tips into white glue. I fixed the holes in the web until it was fully repaired, or until it could no longer bear the weight of the thread. In the process, I often caused further damage when the tweezers got tangled in the web or when my hands brushed up against it by accident.