This is one of my favorite routes in the Tucson area, perhaps for not so objective personal reasons, but it is an excellent route nonetheless. Karl always says that the route to do on Table Mountain is Crescent Crack. In any event, This route has one great attribute: location, location, location. It ascends the fine west buttress of Table Mountain, and is conspicious from anywhere in the Catalina State Park area. And it is a big route in an out of the way area.
Getting there you have two choices. Park somewhere along highway 77 and just kind of make a direct attack through the desert to the base of the buttress. This works, but is probably more work than you imagine. The other approach is to hike up Pima Canyon and either camp on top of Table Mountain or in Pima Canyon at the base of the hikers gulley to the top of Table. A strong party could perhaps hike up Pima Canyon, do the route, and hike out. This certainly works for the East Buttress route on Table Mountain, but why argue with an excuse to spend a night or two out in a fantastic spot. Maybe you just don't like hauling packs with water, overnight gear, climbing gear, ...
Assuming you have made the second choice, you now have to get from the top of Table Mountain to the base of the route (only then to climb back up to the top of the mountain again, isn't this so silly.) The thing to do is to hike to the summit of Table Mountain (the North extremity of this amazing shin-dagger covered piece of rock), and then follow the west rim back south to a prominent gully. Descend this, making two rappels in places where it is impossible to avoid doing so, and then make your way north to the base of the buttress.
The backcountry guide gives a couple of descriptions of this route, which may be a hint that you want to keep your routefinding nose sharp. I have done this route at least 3 or 4 times, so perhaps I can augment and clarify the description somewhat (but then again, maybe not). Also be aware that there is a fair bit of loose rock on this route. My first experience on this route involved my rope being shortened about 10 feet by rockfall and my partner being hurt by falling rock. We were the second of two parties, which in retrospect was not such a wonderful thing. In any event helmets would not be out of place.
Tom's Rock Climbing Info / ttrebisky@as.arizona.edu