MMmm, interesting. Looks like I will be taking the wee muffin fan off the back of the Serrurier and saving a bit of weight.
What about dew control ? I have an even smaller fan directed at the secondary from one side. Not sure how effective it is but as it's spread would be far greater than the secondary area I would expect very little possibility of uneven thermal movement.
Yeah, I know we're splitting hairs here but it's an interesting discussion. I think I'll be removing both fans now anyway.
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