UPGRADE KIT For the to a Our Pyramid HPT Upgrade kit is used to upgrade the Two colour press to a Four colour press. With this kit, the Screen carousel can be changed with just a few simple steps to a full, four-color carousel.
DIY/Crafter/Starter T-shirt Printing Press RANAR manufactures many Econo Screen printing presses for the entry level t-shirt Printer. Ranar Benchtop Series Presses are Configured as 2 and 4 colors and 1 or 2 stations
http://diyTeeShirts.com/build_a_screen_printing_press Build this screen printing press and set it up in your garage. Print up to 3 colors in your graphic. Easy to use with plastisol or waterbased ink. Features squeegee stops, and a leverage system for holding up your screen. Platen area is 12" wide x 16" tall. Uses standard screen printing screens so you can get a variety of mesh counts.