It is PG draftboard - but I oh-so-cleverly hid the seam between the top panel (with the figure and the city) and the bottom panel (with the “S” logo) with that front silver acrylic piece. The sides and back never had to go in the GF, so they could just be solid pieces of 1/4" poplar. All told, once I added the base and lid, it probably topped out at around 26 to 28 inches tall.
As for the parts and pieces, in a nutshell:
Front panel- upper - painted draftboard (PG - from GF) backed up by medium red acrylic (from Inventables). That, in turn, is backed up by a small piece of frosted light diffuser (think drafting vellum) salvaged from a laptop screen. That just covers the “halo” and cut-throughs on the chest logo so you can’t see right into the box. Front city panel is silver acrylic (also from Inventables) glued on with silicone.
Front panel- lower - also painted draftboard. Backed up by more silver acrylic, but set off using spacers made on the GF.
Back/Side Panels - painted 5.5"x24"x.25" poplar panels and elements of silver acrylic
Base - 3 layers of painted draftboard plus one piece on top that fits inside the lightbox (for stability and structural strength).
Lid - painted draftboard and salvaged red dome from an old lens assembly
Light source - common LED light strip (Home Depot)
Everything was glued - no nails or screws except the ones that hold the lightstrip inside the box.
All of the laser cutting design/illustration was done in Adobe Illustrator.
I think that about covers it…
As an aside (just to see who reads this far), way down at the bottom inside I glued a Lego Batman with “Batman Rules!” scrawled on the floor next to him…