On the rear fender of my 124, there is a small dent just above the wheel well. has some small rust, which I'm going to fix w/ POR-15, but I was hoping to smooth out the dent while I'm at it. My dad says it can easily be popped out from the inside ... how does one do this? I don't want to hammer at it, because it might just make it lumpier in the other direction. What's the best way to do it? It's fairly easily accessable from the inside of the wheel well.

__________________
1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)

To do that properly is a skill that takes years of practice. My advice is to find a local Dent Wizard and have them do it. A local body shop should be able to help you locate one.

__________________
95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K