Good Evening Everybody, I've been working on the design of the INT-05A 260" Monolithic SRB for quite a while now in MS Word. I think I'm ALMOST finished. This was a real NASA design from the mid-1960's, which was so massive that they would have had to build them on-site, as the SRB was not rail transportable. The only good reference I've found is a line drawing from Mark Wade's Encyclopedia Astronautica (aka Astronautix.com). I've had to use my limited imagination to fill in some of the details. Here are a few pictures of my prototype SRB (simply pieced together by trial and error) topped by Ton Noteboom's S-IVB and CSM. A Special Thank You to David Hanners for the idea of using corrugated card for the stringer sections. The second set show a slightly more refined version designed in Word. I'm working on ensuring that the SRB mates properly with Ton's S-IVB, which sounds easy, but has proven a challenge for me. Just wanted you all to know that we're almost there with this design, and sorry for all the delays. Let me know if you see room for improvement.