I am going to be building a dual X carriage, tall format gt2 based derivative of RichRap sli3dr, aptly named the gli3dr 2. It will be open builds extrusion for the chassis and motion system.What I’m not yet certain of, is how I want to tool the 2 discrete print heads. I am currently thinking of this:1.75mm e3d volcano 0.8mm or 1.0mm for supports, infill, or just large prints. Possibly Bowden.1.75mm e3d v6, 0.4mm for perimeters and detailed objects.I’d love to hear how you would load out, and why. I’m looking for suggestions and criticism alike.The Z axis is going to be about 1000mm, I’m hoping to have X 800, Y 500 or something about similar. I’ll likely use 1 or 2 mains powered silicone heaters controlled by a I/O input relay.End goal is to have 2 independently addressable tool heads on the X axis, for rapid production of prints, ability to have disparate temperatures, and material types. http://ift.tt/2aIaotP