Originally Posted by Bree123

I don't know. I'm sure that's the case at least some of the time, but speaking for myself -- although I generally don't unsew a block I've finished, I asked for feedback here on how to rescue my block without unsewing & was told I needed to either unsew or remake it. I tried for a bit to get away without doing so & quickly came to the conclusion that I truly did need to cut new pieces for the exterior of a few blocks & use them to replace the ones causing me trouble. I'm truly grateful for the feedback from QB-ers because it helped me realize that this was one of the rare times where refusing to unsew would result in practicality issues (not just minor aesthetic problems). I work mainly with applique where unsewing is almost never a necessity so I needed the insight of those here who are more practiced with the piecing aspect of our craft.