I'm working on making a triple glazing corner sample, and I want to be able to mitre the profile at 45 degrees so I can duplicate it, rotate it and join them to make an elbow. I've muddled through making the profile, but now I'm stuck on how to get that 45 degree angle.
I've had a look around Google, perhaps I'm not phrasing my question correctly but I cant find any answers. I did try creating a cube to use as a sort of cutting form, but Blender wouldn't let me use a Boolean modifier to do it. Any thoughts?
What I'm trying to achieve:
What I have at the moment: