caterpillar scraper, earth mover

I made this for my dad for Christmas last year. He retired from driving these machines a few years back. I got the original drawing from online somewhere, but it was not printable. I redrew it to make it printable. You can glue the front and back together, or drill out the hinge area and put in a rod to make it hinge. I made the axles out of aluminum tubing to press fit into the wheel hubs. I printed the scraper body in signal yellow, and the window and windshields in transparent blue. Black wou