The repair demonstrated on this video shows a very cool technique using the #3 Blade, called the Bow Sweep. The Bow sweep can be very useful for inverted curves like the area surrounding the wheel well on this repair. At 2 mins. 37 seconds and again at 3 mins. 29 seconds, you can see how The Blade is "tensioned" to fit the inverted curve and the tension is held by using reinforced, heavy-duty tape to "bow" The Blade and hold the shape to fit the curve. The tape is placed on each end of The Blade and pulled across the back of The Blade to hold the tension. Any questions? Contact us.