Sorry, thought I discussed this previously. Multi Material Unit
It's an attachment that allows the automated use of multiple filaments (5 in this case) in a single print from a single extruder. You can also mix material types (e.g. PLA, ABS, Nylon, PET, etc..) in a single print.
The only other option is the Mosaic Palette, it has lots of issue complaints too though and is 2x the cost.
Yeap. That's where the company that makes this printer is.#2: Prague as in Czechoslovakia?
2 prints (legs) = 30+ hours each. 2 take 24 hours (arms)#3: 100 print hours to reprint just the silver?
0.05mm layer height prints are SLOOOOOOOOW
And be stuck on my 15" MacBookPro with a single landscape monitor and crappy keyboard vs my Linux workstation with 3 portrait 24" monitors and an old school mechanical keyboard? NFWOne comment: Move work up to the kitchen table until the part shows up.