How to roll a fender lip?

depends on long term goal and if your concerned about a rolled lip - I have the tool to roll the fenders - as mentioned on the back is two layers of metal, instructions for the tool specifically tell you it is meant for single layer - due to my impatience on my Mustang the hammer won out but I needed more than a 1/4" - I tried to use rims/tires from another car and now have correct offset that works - I would buy the Percys tool RRR mentioned and use when the car is back flat and weighted, I have it and it works pretty good. IMO unless you roll back much more than you need for clearance if you turn to fast or load the rear your probably still gonna hit