Sinclair ZX Spectrum+ improved ribbon cable clips for membrane keyboard

Repairing the membrane keyboard of my Sinclair Spectrum ZX+ microcomputer (vintage from 1980's) I noticed that there are several layers that must be well placed to ensure the best contact of the different little metal paths of each layer of the two keyboard ribbon cables.

I have designed new wider clips to improve and press the ribbon cables to the case. Because they now have more surface the contact between the layers of the membrane keyboard is better.

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