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Why is Google allowed to remove purchases from our Play Store accounts without telling us?
(www.androidpolice.com)
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You don't add cooling, you size the motors to have enough thermal mass and mount them to metal chassis.
Potatoe Potatoh. Point is you size the overall system for quick adjustments, not continuous use. If you can get by with less weight and cost then you do as continuous use does not even begin to appear in the requirements sheet.