The whole is about the size of 4-40 rod maybe a little bigger. It was actually the shaft of my Dremel tool cut off wheel. I put the wing down onto my bench that is covered in towels and didn't notice the cut off wheel and now have a nice clean round hole in the fabric. I might try pulling the fabric back up and use some CA. The Fabric has been painted so I can touch it up.
I am trying to avoid an ugly patch. Maybe I can find a decal to put there.
Keith