What items should NOT be washed in the GSD1120 dishwasher?
Items that should not be washed include iron (it will rust), pewter (it tarnishes), tin (it can rust), wood (it can warp, crack, or lose its finish), and non-dishwasher-safe plastics. Antique, metal-trimmed, or hand-painted china and crystal with gold leaf should also be avoided, as patterns can fade and gold leaf will discolor. (Page 10)
From the official GE GSD1120 Dishwasher manual, page 10
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