The boss at PDR is Winston. When a customer car arrives, he marks out the dents with a marker and explains to the customer the % recovery that he can do for each dent (to set the expectation right I suppose). The above dent is located on the left fender.
After marking out the dent, he will choose the best tool to access the dent and push it out from within. He is very careful when doing the repair work. Below is another photo of Winston repairing a dent on the door panel.
Each dent takes about 5 to 8 minutes to be done up, depending on the severity and how accessible the location of the dent is. Below is the right fender, after repair work has been done. It is pretty well done, definitely more than 90% resemblance of the showroom condition.
However, Winston is not god and there are some dents that he could not access, such as the one on the upper portion of the door panel as indicated below. He explained that suction may be required but this may warp the door panel as a result. I respect his professional judgment and leave the dent as it is.
It was an interesting visit to PDR. For those who wish to find out more, you may go to PDRís website- http://www.pdr.com.sg/