I picked up a couple of doors near chicago a week and a half ago. I was doing some deep inspections on them today and they are really nice (no rust)except for some old damage on the passenger door. They have used pull rods so i will have 6 or so holes to weld shut but Im going to use this shrinking disk method to repair the dents. I have access to a stud gun but need to buy the disk. Like you said Q, I've done a lot of body work but I have never used a shrinking disk. I didn't know they existed before seeing your posting a while back.. I think I will dent up the Junk doors to practice before using on this good door. Thanks for the video and post Q