Is it to do with the amount of air that can pass through it?
In: Engineering
That’s sort of what I thought, but good to know. Cheers.
Agree 100%. It’s the most satisfying part of the entire process.
Excellent point. It’s quite a small drum too, which probably means it’s much worse for the environment!
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either air pressure or a photodiode with an IR led shining through the filter (that’s how it was solved on a projector I had)
You don’t mean like for the lint do you?
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