Above is right after I save and exit hammer, or close the map.
Now you see after I reopen the map. Tons of subtle shifts in geometry (trust me, these weren't there before I exited).
I've checked with alt+P as the same thing would happen if I saved a slightly invalid geometry, but the brushes used to make the arch thing are totally valid! I even used triangles in the bottom part (for the most part) to ensure this!
Argh, any help appreciated.. Altnernate ways to creat such an arch thing also accepted. Would the geometry come out better if I made it using a few carves or something?






