Thanks. Work projects have had me swamped (still), but finally getting some action in...
Got the top mounting holes permanently fixed into the inner surface panel and the white gridwork that appears under the surface is completed. Also finally lit the inner "laboratory" bay. Still deciding between green or blue filter under the light... comparison shot included. Have seen both lighting wash schemes used. I can switch them, so no biggie.
Started laying out the surface. Looks like they used standard ceiling light diffuser egg crate grid (or similar 1/2") on the original. Since mine is in smaller scale, I've been looking for smaller gridwork. Interesting that a 1/2" egg carton grid panel I had bought when I started is now "smaller" than the 1/2" grid panels you can buy now. Gotta love "standards". Both are too big of a grid anyways.
Have been playing around with 3/8" paint bucket strainer grids I found. They seem like they will work... might have to double them up for more prounounced thickness. At least they have the squared crossbars (not rounded). Will mock up a prototype structure in the next couple of weeks... off we go on the fun part... finally!