The CR-10/CR-10 S4 (400x400x400mm) is a very large printer for the money, but it lacks one of the things that separates a good printer from a great printer: an enclosure. This design is substantially different from the regular CR-10. Because the S4 is much deeper, accessing the bed through the front alone no longer made sense. Instead, there's now a second door on the left side so you can easily change filament or even tinker with the configuration without removing the enclosure.
Many of the pictures are rendered directly from the CAD program, and so have a Pixar-like computer quality, with nice lighting, perfect reflections, etc. We're waiting to get some pictures of the S4 beta in the field so you can see what it looks like in real life.
Adding a 3D•Upfitters enclosure provides many benefits:
More flexibility to print different types of filaments, including ABS
Better quality prints because the ambient temperature is controlled
Fume filter to reduce smell or vent to the outside (sold separately)
Sturdy, thick, high-grade acrylic doors that allow easy access to the printer bed
One unique feature of this enclosure it avoids the side slit most DIY enclosures have. While a slit is easy to design, the volume of the CR-10 is so large it can't maintain temperatures when there's a top-to-bottom hole in one side. Instead, there is a custom-designed filament guide that gently redirects filament from the top-mount spool holder, optionally through the runout sensor included with the CR-10S, and into the extruder.
The outside venting system will send potentially dangerous and definitely odorous fumes outside. We supply the fan and 4" dryer hose adapter, you get the rest of the parts from your local hardware store.
Interior LEDs (as pictured in the wood & acrylic version renderings) will make it easier to see prints inside the wood version.