During my study, we had an introduction class (about 10 lessons for 1,5 hours plus homework) to Rhino respectively Rhinoceros, a 3D rendering program, used for (semi-)technical drawings. Our final assignment, for that class, was to rebuild a given watergun (printed on paper) in 3D. It took me a few hours, but I enjoyed my work. I gave the gun a little twist in appearence, colors and texts. There are no hard feelings involved, i just liked the play of words. BAM BAM.