Hi All, Sorry this is the wrong place to ask this question, however I have asked another in the General section to see if we can have a Filaments section added to the forums. My question relates to a small part I have created in 123D, it is a replacement helicopter rotor for my sons helicopter as the original one fell off and cannot be found. It is about 50mm long and the blades are only 2.5mm thick, it is a press fit onto the helicopters shaft, I have the following questions: What would be the most suitable material to print it from assuming that the blades need to flex a little and take a bit of abuse from a young one (not the TV series), yet needs to be rigid enough that it can click firmly into place on the helicopters shaft? At present I am using 0.25mm layer height, 3 for top/bottom/perimeter should I use less/more? I currently have an infill of 30% rectilinear, should I really be aiming for something like this to be solid? I found that I had a spool of ColorFabbs XT, so tried the above settings, but I am not sure if it is durable enough. Any advice would be greatly welcomed and if a new Filament forum section gets created I will happily move this to there.