When plastic has been asked to stretch or bend in a direction it doesn’t want to there will often remain white “stress†marks. For example, on a belly pan.
Many times, these white marks can be greatly minimized and almost eliminated by carefully warming the area with something like a hair dryer or heat gun. You must do so with extreme caution and slowly so you don’t warm the area too quickly. This really works well on blue Yamaha belly pans.
