I usually come into these threads to say the same thing. From 2000-2003 I did IT support for a lab with SLA, FDM, SLS, LOM, and Z-Corp machines (and wrote some

I usually come into these threads to say the same thing. From 2000-2003 I did IT support for a lab with SLA, FDM, SLS, LOM, and Z-Corp machines (and wrote some supporting software for many of them). In addition to your list: * parts often need some type of post processing to be viable long term (it depends on the process, support removal, sanding/bead blasting, resin injection, curing, etc.) this can take many additional hours. * different machines have different tolerances That said, I'm surprised overhang is an issue. This is a solved problem. Machines like FDM use a non-binding support material; support is intrinsic to SLS, Z-Corp, and LOM processes; SLA is the worst since the support material is the same as the building material. To the best of my memory, in these big commercial machines support creation was done as part of the slicing process (or some other solid model preparation) in software before the part was sent to the machine. That said, this is the first home 3D printer that I've been excited about, and the price point is killer. Also, if they haven't licensed tech from 3D Systems, how long before they are sued.