So I have become fascinated with this lately and think I have found my new project..https://www.youtube.com/watch?v=iAkzb1nXzwUI just have to have this sitting atop my toolbox at my job working on the Corvettes. So here is the engine block loaded in Repetier..While the above picture is of repetier host I have switched to Prusa Slicer 2.0. This is the new Slic3r and that is what I was using in repetier anyways and I don't really print from usb anymore. And I have nothing but good things to say about Prusa Slicer 2.0. Here is my Black Widow about half way done printing the engine block. ~22hrs in so far..The LS engine family are all aluminum engines. So I am printing the block and heads with silk silver PLA so it has a shine to it.