i hated printing coroplast. I still have the inks, but I doubt I will use them on anything. Screen Printers are hoarders.
Some NASTY stuff, its like concrete once you start you need to finish the job then don't take a lunch or cig break. The stuff will set up quick and the retarder is really a need. You will use lots. When I bought my buisness it had a auto printer for political signs and such and every two years I worked it hard but the clean up and chemicals sucked. Glad I got rid of it, I can send them somewhere else that is much more capable of doing them.
Dido..... MESSY stuff and you better have your working britches on!