I've read this thread on the Fab@home. It's really only usefull for an experimental tinkering/ hobby capacity.
Have you looked at the build quality? It's more effective to send 3d objects out to service bureaus. The reolution is much better and they will often troubleshoot the files and notify you of any issues.
Alothough very cool with LOTS of potential, I think it will take many more generations od development to achieve general use.
Think of the evolution from dot matrix to desktop color laser printers. That took, what... 25 years or so?
Just my 2 cents.
