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Tom’s Hardware
Tom’s Hardware
Technology
Mark Tyson

MacBook user explains why he files the sharp metal edges off his Apple laptops — unibody design facilitates a surprisingly deep roundover

Metalwork filing.

For centuries, artisans have adjusted their tools to suit their preferences and work styles. In a similar spirit, software designer and engineer Kent Walters has used a metalworking file to round over the corners of his MacBook. On his blog, Walters shares that “people like to freak out about this,” but we think the DIYing and modding core of Tom’s Hardware readers will probably overwhelmingly support his right-to-disrepair stance.

If you’ve owned or used a modern Apple device, you may sympathize with Walters. “The bottom edge of the MacBook is very sharp. Indeed, the industrial designers at Apple chose an aluminum unibody partly for the fact that it can handle such a geometry,” explains the San Francisco resident. “But, it is uncomfortable on my wrists, and I believe strongly in customizing one's tools, so I filed it off.”

The idea seems fair, but the images Walters shares show that there’s more than a modicum of filing work done to increase the comfort of the palm rest area to an acceptable level. The eased profile is particularly rounded right below the touchpad area. Indeed, Walters says he was concerned that he might file through the unibody when doing this, but thankfully not.

MacBook bullnosing DIY tips

If you are also barely tolerating the sharp edges of your MacBook, Walters has some advice. Inspired DIYers should tape off the speakers and keyboard before lifting their metalworking file, he suggests. That will obviously minimize the ingress of aluminum filings. Clamping the notebook to a rigid surface is also recommended to help you work with accuracy.

To round the edges off the MacBook palmrest, as pictured, Walters started with “a fairly rough file, as that is what I had on hand, and then sanded with 150 then 400 grit sandpaper.” He notes that this work was done months before the pictures, so the finish has earned a few battle scars since – a few scratches and dings.

Finally, thrifty folks who will keep their devices as pristine as possible to maximize resale potential down the road probably aren’t the best match for this kind of project.

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