Summary

This design adds larger buttons to Anker Q30 headphones (transferring presses to the Q30's buttons beneath). The standard ones can be hard to find quickly, especially if wearing gloves. The new buttons can be pressed either axially or radially and have exaggerated tactile surfaces to aid identification by feel.

Attach the button extender with some double sided tape, making sure the extended buttons butt up against the Q30's ones, and centering the gaps between buttons (some pencil lines when dry-fitting make this pretty easy). There's a small bump on the Q30's center button that should fit into the slot cut out of the inner edge of the model center button.

A step version is included to aid tinkering.

Some notes about the design in case you want to remix it with different goals:

1) I don't plan to use the audio input port, so didn't avoid it, favoring wider buttons.

2) The buttons are deliberately chunky and hard-edged to ease finding them with gloves. Same reason the center button sticks out further than the others.

3) I wanted to be able to press either face of the buttons, so the sides were kept flat.

4) The recess for the double sided tape presumes a thickness of 0.75 mm (I used VHB tape).

UPDATE: Added button function icons.