Printmaking on the Letterpress?

Continuing the discussion from Making a linoleum or rubber stamp: Shapeoko2 training?:

did we ever get the inks necessary for the letterpress? I am interested in making some plates for it.
Photomancer says it has to be 0.918" (odd size) in height so we might have to plane down the plate before it we can try it.

No I need to sit down and put in a fatty order of inks and silkscreens.