This is a model from Mechwarrior 4. Actually what I did was convert a pepakura model from here http://www.mechwarrior3.org/wforum/viewtopic.php?t=3244&sid=bca9ad5cd778fa5e88edf66a452eeeeeEDIT: uploaded a model with stronger knees that slice more properly. Should break less nowPrint with support. I used KISSlicer, sliced at 0.2 mm with raft and support at 80% flow rate, with medium density and 1 mm expansion from the object. Your mileage may vary.