Purchased in January 2017 and caught fire in December 2017. I installed a 3 way light bulb and it seems it shorted out two hot legs when I was replacing it Lightbulb turned on. An impressive intense electrical buzz followed by the burning of a crappy cardboard insulator. As the smoke cleared, I found that the brass base of the lightbulb had actually melted. The vessel itself didn't melt or deform. I used the pads several times changed without problems.This time I will spend a little more - and hope for a much better quality.