I use to oftenly work with blockout, directly on the screen,
this water based liquid is use to fill the hole on screens.
Since it's water based you can "erase" what you've made with water (Q-tips seems to be the best way to undo something), on the other hand you can only print with solvent based inks.
I oftenly use it to make harsh back layer of posters but i sometime work only with it.
i thought i would avoid this paint on stuff and opted for the photo emulsion by speedball. having worked out that this was probably not going to be that good or successful i havent used it. my home set up could well cope with this paint on blocker.
opted to use this hire studio in marshfield..which is miles away from most of you but might be useful for anyone living in the SW of England.