I have always heard that home-made paint jobs are not as durable as professional finishes, and sure enough, the two frames I have painted look very nice but chip easily. What makes the difference? As far as I can tell, I can do exactly the same prep work, and use the same paint and painting techniques as anyone else. One thing I did not do was to bake the frames afterwards, but supposedly the paint hardens just as well with time. What do the pro’s do that I can’t? And how can I come as close as possible to achieving a professional finish with a DIY job?