The process wasnt too bad but you do have to do it in small doses. It seemed like every time it dried , there was a void ,sort of like an air pocket was there. Then I learned to put less on each time and build it up. I practiced filling in the ornament and repairing the cracks on one that came from pull a part before I tried my actual GN one. The repair was flawless. I have had that part on a storage rack exposed to the weather for years, so far no ill effects. It will get the vibration tests once it's installed on the car.