This is my second map, another PH (physics) map. This time I tried to create more cool stuff. The ball gets all the way around pretty much every time. I won't be completing this map as i've been working on a single player map for the last 8 months and just don't have time. I may make a new even better ph map at some point though.

The first ph_machine (totally different map to the one above)
http://homepages.nildram.co.uk/~henleyb/ph_machine.zip