I had a graphics class in high school where we made shirts, it was really fun, we used photo-shop to make our designs and then made the screens. We didn't have a fancy conveyor belt, we had a heater to dry the ink and if you left it for one second too long it burned the shirt(black shirts were popular when I was a kid) and one second to soon and it was still sticky. I failed that class and I have no idea why, I designed and made lots of shirts, I can't remember why I failed. . .