Share this post on:


This document describes how to smooth out the sharp edges on Apple keyboards and other products.

Problem Background

Apple makes some very nice wired and bluetooth wireless keyboards made with solid aluminum. There is a large version and small version of the keyboard. The new models have more rounded corners than previous models, and also a Touch ID login option available.

These keyboards and other Apple products for some reason have very sharp edges and lack the smooth finishing you would normally find on any similar metal product designed to be held or touched.

If you use a mouse to the right of your keyboard, and move the mouse left abruptly, your thumb knuckle will hit the sharp metal edge of the keyboard.

A worse situation is when the edges of these keyboards get dented on the edges. These dents can create very sharp sawtooth points along the edge of the keyboard.

Problem Solution

It’s possible to purchase fine sandpaper that can smooth down the edges of these keyboards. An ideal choice would be 3M P220 (fine) or 3M P320 (super fine) waterproof sandpaper.

While paper-backed sandpaper may work okay, it can crinkle, crack, and be difficult to work with. The waterproof sandpaper has a pliable rubber surface backing that’s easier to handle and work with.

Be careful to only sand where there are sharp edges, and DO NOT use coarse sandpaper because that can cause scratches that are uncomfortable to the touch.

The fine and superfine sandpapers should result in a smooth surface.

If you are just working out small dents, you could focus your sanding efforts on those. If you’re okay with having an ‘artisan crafted hand-made look’ for your components, you might consider smoothing down all the corners. It will look less machined and the lines won’t be as crisp visually, but the devices will be more smooth to the touch.

This is, of course, an irreversible modification, so think through the decision beforehand.

Handling Precautions

Here are a few handling precautions for the sanding procedure:

  • If the metal has been dented there may be splinters, so use caution.
  • The sanding process will result in very fine metallic dust. You may want to wear a mask to avoid inhaling the dust.
  • The dust will be dark gray and can stick to your skin, so be ready to wash your hands afterwards.
  • Keep the dust from getting inside the keyboard under the keys.