OXO Good Grips Non Stick 30cm Frying Pan 2 "Deformed base" Mr Lewis 06 November 2015 The pan was purchased to be used on an induction hob. It worked well for about 8 weeks, the base then started to develop a downward deformity in the center of the pan of around 100 mm and 5 mm in depth. All of the induction pans in my kitchen have thicker bases and also have the area where this deformity has taken place, a recess of around 2-3 which seems to stop this type deformity taking place. The pan has been returned. A note from the team Thanks for taking the time to write your review. I'm sorry to hear that after a few weeks in use you'd experienced this problem. I'll be sure to pass your comments on and I'm glad the team were able to help when you returned it.