A while back I bought a 464 that had some damaged and missing keys for the cassette deck area, so when it arrived I measured up the good ones and made some that are close to the originals For all to use.<br />
I have made them with the symbols on the top and also a blank one if you prefer.<br />
The keys are flat on the top as it came out better on my 3d printer.<br />You may need to use a drill bit to smooth out the inside of the mounting hole to allow it to rotate smoothly.
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[[File:keys.png]]<br />