Writing on a T-shirt - How do I preserve it?
A friend of mine and I are doing T-shirt quilts together. This will be her first and my 4th. I have a love-hate relationship with them as they are heavy and produce unique challenges. Her shirts are her granddaughter's and one has signatures from all her teammates. Is there a way to preserve them so they last through quilt washings? We have no idea what was used to make the signatures, it appears to be marker, but don't know if it was permanent.