Here is a pretty nasty crease I removed from an 04 VW Jetta. The paintless dent repair / removal (PDR) process took nearly 3 1/2 hours. I used a few tools and a knockdown. Very little tapping though.
Creases are definitely a challenge no matter what length and depth. It’s like folding a piece of paper and then ironing the line out. You have to be very precise or in the end, you’ll still see a line. Between technique, patience and experience helped assist this to become a successful repair. For more info regarding our one-on-one PDR training, contact myself (Myke Toledo) at 1.858.699.2054 or 1.800.420.3368. You may also visit my official website at www.denttime.com as well.