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Step 4FILE THE KEYS
We need to scrape off the paint that is on the key-bars underneath the crossbar. This way, the key-bars can make electrical contact with the circuitry we will be attaching to the crossbar.
Using a folded-up wad of paper, prop the crossbar up and out of the way. Then, use a Dremel grinding tool to gently sand away the paint on the key-bars underneath, revealing the shiny metal. Be careful to avoid any springs that may be attached near the crossbar, because the Dremel will cut through them easily, and trust me -- they are hard to replace! Use a metal file, sandpaper, or even a utility knife to scratch away the paint in areas near springs, or in any other hard-to-reach areas.
Using a folded-up wad of paper, prop the crossbar up and out of the way. Then, use a Dremel grinding tool to gently sand away the paint on the key-bars underneath, revealing the shiny metal. Be careful to avoid any springs that may be attached near the crossbar, because the Dremel will cut through them easily, and trust me -- they are hard to replace! Use a metal file, sandpaper, or even a utility knife to scratch away the paint in areas near springs, or in any other hard-to-reach areas.
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