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The TrackPoint cap and fingerprint reader filler were 3d-printed with flexible TPU filament which required a lot of experimentation with temperature and print settings to get a proper color, flexibility, and as little stringing as possible
The TrackPoint buttons and "i" in the ThinkPad logo were painted with a custom paint I had made to (eventually) match the final TPU prints as close as possible while also matching the actual Dolch logo