Behold the glory that is my handiwork. I present the unpainted Team Fortress 2 Level 3 Sentry Gun paper model. It's not papercraft, since that involves a simpler method of cutting and gluing tabs and whatnot to form the object. I've taken liberties of utilizing unorthodox methods and materials to achieve this.
I do, however, have the eight sheets of plans and diagrams I used to construct this. Here they are, presented in no special order. These eight sheets, along with a few images of the sentry gun, are all I used to build this. No CAD or game model rips involved.
Page 1 (References the construction of the rear, angled leg struts)
Page 2 (References the parts borrowed from the two source sentry models)
Page 3 (Calculations of strut length, angle of attachment, and angle of orientation)
Page 4 (Minigun assembly)
Page 5 (Preliminary draft of part dimensions)
Page 6 (Turret design and support shaft)
Page 7 (Ammo housing and support struts)
Page 8 (Preliminary draft for front and rear leg; rocket cross section) (EDIT: corrected bad link)
There's a few parts that I have not documented since they were made on the fly. The front leg struts to the center shaft, wires, electrical plate, and miscellaneous decorative fasteners are unknown. These can be provided on request.
I'll be documenting individual components in detail over the course of the next few weeks, highlighting various construction decisions used. Many of the applications here can be useful for future project reference.