Switching to Epoxy and Surface Preparation

What happens here

After the failed brazing attempt, the presenter confirms that the material did not adhere and peels it off with snips. He then switches to "Plan B," introducing a two-part epoxy called Permatex Steel Weld. He prepares the area for the epoxy by using needle-nose pliers to pinch and remove some of the radiator fins around the damaged area, creating a larger, flatter surface for the epoxy to bond to. This also allows the epoxy to get a better 'bite'.

Goal: Prepare the radiator for an epoxy-based repair after brazing failure.