Just found this out… When 3dprinting in space you can’t use snap off supports at they pose a risk to astronauts if they are floating around in zero G.
I wonder why the 45° rule as on earth it has always been 60°.
I have always used 45 degree and greater (from the horizontal) angles as good to print.
I don’t deviate from this when I go into Space 
@Neil_Darlow you mean when you fall down and manage to miss the earth.