First of all I apologise if this is a silly question but I have been unable to work out how to do this in Blender and was wondering if anyone can help.
I am making a model of a train and would like to make the window frames rounded at the edges as they are in real life. I have been unable to work out how to do this with the Bevel function in Blender 2.77. Is there a simple way to make these windows with rounded edges instead of square ones?
Any help would be gratefully received.
Thanks


PS - Thanks for your comments so far.
– Stephen Apr 24 '17 at 20:10