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Archive for July 24th, 2019

Kinesis Freestyle 2: Steel Tactile Bumps

Adding tape bumps to the worn Kinesis keyboard demonstrated I really need tactile home keys, so I popped the tops and fired up the Sherline mill:

Kinesis keyboard - 2 mm drilling
Kinesis keyboard – 2 mm drilling

That’s a genuine 2 mm carbide end mill, poked 1 mm into the key cap, snuggled right up against the front edge.

Two epoxy dabs and some wiping later:

Kinesis keyboard - 2 mm tactile bearings
Kinesis keyboard – 2 mm tactile bearings

The careful alignment on the F key tells you I did it first; obviously, I should make better fixtures.

The holes could be slightly larger and maybe slightly deeper, but the bearings feel just right.

Indeed, they work so well a ball now distinguishes the far-flung Delete and Backspace keys:

Kinesis keyboard - 2 mm bearing - Delete key
Kinesis keyboard – 2 mm bearing – Delete key

Now, to see how long the epoxy lasts …

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