Thanks. Yep, it's all paper, except for these things: 1) The ET's nose spike (not shown in the photos yet) is a toothpick; 2) The small piping on the ET is silver string; 3) I inserted a square brass tube inside the ET's intertank, and that will be the forward SRB attachment points. I figured I needed something solid and straight so the SRBs would line up correctly; 4) There's some basswood glued to the Orbiter's internal formers to keep them rigid; 5) The LO2 feedline fairing (not shown in the photos yet) is carved out of basswood, but I haven't glued it on yet, so I may still try and make it out of paper. We sometimes forget that paper comes in lots of different colors and textures and types. A trip to my local art-supply store a few years ago was a real eye-opening experience, and when I looked through their books of various papers they had in stock or could order, it seemed like I saw something on every page that I could use on a model somehow.