I use a large softbox 2ft by 2ft and two lights (eliminates the shadows on each side., one on each side of the product, and another firing down from the top, slightly in front of the subject. If you don't have softboxes, then a "V" reflector will also work nicely.
Don't use matrix/evaluative meter. And don't use TTL. You want the background to blow out (overexposed). Try manually setting the power levels of each flash, and also use center weighted or spot meter. For consistent lighting if you're shooting multiple products, then lock in your exposure using manual mode, and fix everything for the entire shot.
As for white balance, place a gray card as the subject with all your lighting, then do a preset WB, or just shoot raw, shoot a gray card as your first shot, and then use the gray card shot as your WB reference.
This setup works... Control the subject to background distance to ensure enough power reaches the background.
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This setup guarantees a white background. The additional strobes will burn out the background.
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This post has been edited by adriancs: Dec 16 2010, 10:22 PM