I had this happen once on a pinwheel quilt. And thankfully it only happened in one seam!!! I wound up taking out the damaged triangle and handsewing in a replacement. I'm pretty sure it happened because when I cut my squares apart, I must have cut less than 1/4" for this particular block. It is the only thing I can think of because this quilt was alot of HST and I only had one seam fail.
The first picture is the blown seam and the the third picture is the same block after my repair
Last edited by auntpiggylpn; 05-28-2012 at 06:24 PM.