[Boatanchors] Sandblasting tips needed

[Ed]

I have a cabinet that is worth saving but is heavily rusted in spots. I've 
considered taking it to a shop but find they are expensive and don't care to 
take on small projects like this much (maybe the reason for high quoted 
prices). I have a five horsepower air compresssor with large tank, dryer and 
gravity feed hopper. What pressure do I start with, type of media to use, 
and any tricks you may have learned over the years would be greatly 
appreciated.
Thanks,
Ed-KV5I