I cleaned two of the above in one premises today for a customer who has just bought the house. In both cases the shelf supports and shelves themselves were in a pretty shocking state as you can see from the picture. The pic was taken before removal and cleaning but they looked almost exactly the same after a spell in the dip tank. I think they've been left in the oven during the self cleaning cycles and the owners handbook explicitly says they should be removed. It had me scratching my head for a while though - it's not very easy to see but there's a definite blue tinge to the parts - exposure to very high temperatures and consequent blueing? Anybody agree or disagree?
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