The advantage of this process is that the artist's model is not destroyed as in the cire-perdue, and if a "waster" results, a second mould can be taken.
With this question, you want to get a handle on the energy sources the manufacturer uses, their commitment to environmentally sound disposal practices of any waster generated, and just how much waste IS actually generated.
Free-running water is a major water waster.
Think about what you want The Internet can be a great time waster.
This is a major time waster for blind or visually impaired users who are using these access tools.