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I was wondering if you think you need supports and generate with supports, and machine thinks it doesn't need support does it still print something or ignore my support option? I thought my object needed supports so I selected, however it looks as thou there is no support structure where I thought would need some, hope I am making sense ;)
If the slicing software doesn't think it needs supports, it won't generate supports. For example, in Slic3r, if you set the support option to generate support for 45 degree overhangs - meaning any slope of 45 degrees or less over thin air gets support generated underneath it. Anything more and no support. Think of 90 degrees as vertical and 0 as horizontal, so 50 degrees is a bit more vertical and gets no support.