The chefs produced fine cookies from those fine Thing-O-Matic objects.
Although the economic argument for producing custom cookie cutters may not be persuasive, the fact that you (well, I) can produce custom widgets certainly is. Most of the things I build and repair don’t require great mechanical strength or finicky dimensional precision, so a DIY 3D printer is exactly the right hammer for the job.
Now, if only I had a laser cutter…
The Smell of Molten Projects in the Morning 