Recently I found out these printers are becoming more accessible to end users. Until a couple weeks ago, I thought they were industrial grade equipment, not something one could have at home.

Does anyone know if there's a "main 3D printing" forum, something like bitcointalk.org for 3D printing? I've googled a little but all forums I found were almost "ghost forums", with just a couple dudes posting something once in a while...
The subject is quite interesting, I'd like to learn more.