Build a "working" tricorder

Step 13 Details

I used aluminum tape to wrap the edges of each side -- just cut it into 1/8 inch strips.  I also used it to construct a bezel for the display.  I just applied it to some thin cardboard and press-fit it into the head.  I super-glued a bead on the 1/16 dowel that activates the home button, and added some plastic screen over the speaker.  The hardware store had some light aluminum sheet that would have looked better, but I was a bit pressed for time.