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PunchyHamstertoday at 11:06 AM2 repliesview on HN

I wonder why they can't just get the last half a mm of accuracy by just grinding down the tips


Replies

layer8today at 11:58 AM

Grinding down plastic doesn’t leave a smooth surface, which is why this generally isn’t done, and would especially impact the air flow on a fan.

sheiyeitoday at 11:29 AM

I think tips are one of the more crucial parts of a blade, so if you care about how that blade works you probably don't want the shape to deviate there.