Hi!
I can't remember how, or know if it's possible, but I'm wondering how you set the transform tool perpendicular (not sure if that is the right word) to a face. I tried the tranform orientations option on the top of the viewport but that doesn't seem to work.
I want to duplicate the highlighetd (orange) part up to the right, if that makes sense.
That works! I can't get the transform tool to physically change shape/location, but it works with the hotkeys x,y,z so that's good. Thank you :)
By the way, I tried to make an array modifier on the orange part but that wont follow the face orientation, any idea why?