This is a small printing press for making gift tags and business card sized prints. The useful printing area is 3.5in by 2 in. To make plates you just need to make a 3.5"x2" plate a few mm thick, sketch out your design, and extrude it out of the opposite side of the plate by .75 mm or so. I've made a little stand to hold the platten and the plates upside down for easy inking and to keep them from making a mess when you're working with multiple plates for a multicolor print. The easiest way to keep from getting ink on the plates when you roll them out with a brayer is to include a small border around the design but sometimes that's not feasible or desirable so I also included a small frame to go around a plate that the brayer can run along and keep things clean.
Printing is pretty straight forward, no supports needed, all the pieces print on a 6in bed easily.
You will need to print 2 end plates, 2 side plates, 2 levers, 1 print bed, and 1 block. I would recommend a pretty high infill on the levers, 50% or higher. I've included a test print knob to test fit the holes and pegs so you can scale it up or down a hair before printing the entire press.
All the parts are held together with a 1-foot piece of all thread cut into thirds. I used 3/8 threaded rod because I had it on hand, but 1/4 would be fine. On the top of the print bed, I cut a small piece of EVA foam to allow some squish and get some emboss on the paper.