I haven't mounted this yet, but to those wondering about orientation and supports, this video ( https://www.youtube.com/watch?v=xPvLKSClShc&t= ) will show you how to orient. For supports on the pipes (4010 at least), i found support only touching build plate with 40% supports worked. You may want to add a little extra support to the screw tab that goes through the base on the side the fan goes (4010). One of those supports failed, but still gave a workable print. The ducts print without support though, otherwise you'll just fill them with the supports. Print slow (40mm for the main speed) and it should do fine. I did supports everywhere on the base, but it might be ok just touching the plate. Everything fits together for me after the cleanup, will mount soon on my Ender 3 and report if any problems.