Look Ma, I made it myself
I have been following the 3D printer arena for a little over a year. In some ways it reminds me a lot of 
the “good ol days” of Amateur Radio. A person has an idea, and all they have to do is spend a little time on the personal computer and render a drawing. Then move the file over to the printer and in a few minutes viola, you have a working piece.
That version didn’t work, make a few adjustments and reprint. For those of you that aren’t familar with 3D Printing, take a look at the following video for a really good example of what you can do with a 3D printer:
httpv://www.youtube.com/watch?v=u7h09dTVkdw
The video shows a more expensive commercial unit, but If you want to build your own, take a look at http://reprap.org for a place to start.
Keep an eye on my blog for some Amateur Radio Related products made with 3D Printing.