[wdfifteen]

I have some die cast aluminum, die cast zink, and wood furniture parts that I need to clean. The metal is carburetor and manifold parts and the wood is the pigeon holes in an antique secretary desk. The common denominator is that they all have little nooks and crannies that I can't get to to clean by any other method I can think of. I hit the wood with some glass beads that I had around at 50 psi and it was a little too aggressive. I've looked at corn cobs, pumice, and walnut shells, but I can't get definitive information on which would be best. Any suggestions from the brain trust?