From my comment on this question/answer Why wasn't Superman naked when he was lifting Luthor's artificial continent?

Supposedly the blanket is made of a super strong fabric, which is why it can withstand so much abuse; but if the material is so durable, how was Martha Kent able to tailor it into a form fitting costume?

Thaddeus says:

Martha Kent unwove the Kryptonian fabric and rewove it into his costume. It was indestructible, didn't get dirty or torn and neither did his cape. She also created the S-shield.

Wouldn't her scissors break (or her hand) from the effort of trying to cut/tear/disassemble it?