Free Republic

I'm trying to replace a broken shaft in my sheet metal extrusion machine, but I've run into some machine screws that just will not budge. They're 3/16th, Allen type, steel screws, mounted in an aluminum block. They have a patina of rust on them, and I already broke a new bit trying to bust the first one loose. I sprayed them all with WD-40, and gave it an hour or two to soak in, but still no go. Anyone know of a better lubricating product, or some trick I can use to get these suckers to turn?

In a single instant of Mother Nature's fury, the island nation of Haiti was transported into the worst nightmare of 3rd world conditions. Considering that Haiti wasn't a booming economic scene to begin, it's amazing to see that there is always a lower depth in a crevice in which to sink. As we've been watching the heart wretching visuals of people in dire need, there has been no delay in a world community willing to step up to the plate with assistance. But even a multinational rescue effect of willing workers and supplies cannot overcome the logistics of an area...