Apologies for the crap photo. My Kindle was the only thing handy. I printed this at 100% scale.... should easily be 150% or more for 28mm scale. The details at 100% are largely lost, but I think it would turn out if scaled up correctly. I'll probably give it another shot at at least 150%
Also, one of the files showed up broken in Slic3r, but went through fine after repairing with Netfabb.
I used a 5mm brim, but on end still came up a tiny bit on the flat pipe side.