I’m trying to make a tileable texture. I draw out a 3D plane, subdivide, change the resolution to 1024x1024 with the proportional option disabled, resize, and go to orthographic mode. When I hit F, the plane does not fill the screen. As a result, the tilde key is useless as there are large gaps between the planes in 2.5D.
*I think I worked it out. I pressed ctrl-0 and pressed F while in half size. It fits the view now 
If anyone has any additional pointers I’d be happy to hear them.