A number of years ago, a good friend of mine was outside, stitching somewhere there was sun. She had been using a magnifier. Just a few seconds of sun and she wound up with a hole in the fabric. It took work, careful patching and stitching but she managed to repair and complete the project.
I know understand exactly how fast something can go south, literally. I was comfortably sitting in the living room this afternoon and turned away from IAT for about 2-3 seconds. My magnifying lamp was on, the sun was shining through the window and I wasn’t blocking it.
Suddenly there seemed to be a small curl of grey smoke. I realized fairly quickly what was happening: turned off the lamp, blocked the sun, and squished the area with damp fingers to stop further damage. But this is what I now have…

You can see the hole… more sadness. Now I have to decide on tossing, patching, altering the pattern. I need to think on it for a couple of days and move on to something else while I settle.