The control panel, as seen in three closely-examined comms, comes in two thicknesses of aluminum stock.  That's right!  It seems that even with the minimal amount needed for these tiny pieces, Wah ran out of one size and started another.  In Alpha (and appearing identical in Epsilon), based on physical samples held next to it and also from carefully measured micro-photos, it is estimated as 0.020 inches.  While Zeta's is separated from the shell, we did not have the opportunity to put a micrometer to it, but it was discernibly thinner, perhaps 0.016" or even a tad less:

Photographs of Delta and Gamma strongly suggest those two also had the thinner (0.016") aluminum as well.

In Alpha and Delta a very subtle left/right surface brush is seen; in Zeta it runs up/down - plus of course there are lots of random scratches.  Overall, though, from any distance away the control panels look to have at this point just a dull matte surface.  Epsilon's has been cleaned recently, so its original appearance is lost.

Where to get:
For the thin aluminum, shop for 26 gauge (0.0159") sheet.  For the thicker, seek 24 gauge (0.0201").  This is inexpensive material, but these thicknesses are not as common as 1/16" and up.  They are available in some hardware / hobby stores or online at metal sites, although the small amount you need is not accommodated by many.  Try Amazon first.

Star Trek is a Registered and Copyrighted Trademark of Paramount Pictures.  All Rights Reserved.  All subject matters referring to Star Trek are trademarks of Paramount Pictures.

This website has not been produced or endorsed by Paramount Pictures.  Any material belonging to Paramount’s Copyrighted Material that may appear on this site complies with fair and/or acceptable use for the purposes of review, study, criticism, or news reporting.