normanvalentine1d ago

Filing the corners off my MacBooks

https://kentwalters.com/posts/corners/

On filing the corners off my MacBooks

Show thread420official1d ago

I just did this to my MacBook not because of the sharp edge but because the pitting turns a sharp edge into a sawblade. Something about the grounding on on the frame when plugged in mixed with my sweaty hands leads to damage along this sharp edge on every MacBook I've ever owned.

See https://www.reddit.com/r/macbook/s/hbyVh5SJhw for another poor soul with the same caustic skin

Show threadCGamesPlay1d ago

Oh is that why it happens? Was wondering why the spot directly under my wrist was pitted into a sawblade. I also filed it, though just enough to remove the pitting, nothing like the OP did.

It's easy for me to feel the mains frequency while gently rubbing the top surface of the MacBook while it's plugged in. Really feels unsafe, but neither me nor the computer have suffered any serious injuries yet.

Show threadajam15071d ago
Using a 3 prong extension cable on the charger will prevent this.
Show threadimglorp1d ago
How? The (US) charger's only got 2 pins so ground stays unconnected.
Show threadTsiklon
The extension cable they used to include in box with the computers, it has the third pin for the charger brick connector which is wired to ground
Apr 11 at 2:18amWeb
Show thread151551d ago
There's zero chance that the DC ground in the laptop is tied to earth ground in the charger: they use LLC resonant converters and flyback converters (depending on vintage) - an earth ground tie would defeat the purpose of these isolated topologies.