7 segment LEDs on wood face I'm not sure this is right place for this question, but does anyone have any idea how a 7 segment display is projected or embedded in wood for products like this?



Full product info at http://www.amazon.com/Cube-Wood-LED-Alarm-Clock/dp/B00D6DI0LE

Another example:



From: http://www.selectism.com/2013/11/27/a-wooden-led-alarm-clock-and-wireless-bluetooth-speaker-from-gogroove/
This is done by carefully placing a layer of wood veneer over the 7-segment displays. The veneer is thin enough to let the light pass through. I wouldn't be surprised if some manufacturers use brighter than normal LEDs to make the display easier to see. Here is a video detailing an example.

It is also possible to simply drill out the wood to make it very thin where the 7-segment displays go. Here is an example of drilling the solid wood to be very thin.