The man who taught me how to tie and paint had the same rack as Stump but the bottom AND top were open. So when you tightened it all down, you could just flip it and then put it in oven.
That way you wouldn’t get any “cone heads”from accidental overheating. Excess paint would just head towards the shank of the hook.

To clarify, the end plates moved in as you tightened everything up

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