Funny thing, I was thinking about building a 3d printer... using the propeller... and the next day I see this article in popular science....
Which led me to this site..... http://fabathome.org/wiki/index.php?title=Main_Page
I want to build one, albeit a larger and better one ...·
To the tune of eight feet tall and wide..·
My original idea was a little more flexble in that the "tool" would be interchangable allowing either depositing materials as this one does to build up a form, or a router type tool that would cut into blocks of material to form shapes.·
Also, my idea included the ability to scan a 3d object first and then replicate it..
How about fabricating multilayered PCBs this way... Who knows..