I know this is an oldish thread but I have been having fun and games trying to make my own marking (layout) blue, with hilarious results and thought maybe I could get some advice.
I want layout blue for large areas too big for felt pens. And I find felt pen rubs off the job too easily. And being blind in one eye and can't see out of the other, copper sulphate does not make a clear enough medium for me. But I live in a remote small town so cant buy any layout blue and cant get inflamables shipped in from the outside world.
So I read in an old book, which I cant remember exactly which one now, that you could make marking blue out of blue oil paint and methylated spirits (denatured alcohol if you live on the western Atlantic). So I bought a nice tube of artist's blue oil paint and squeezed some into a jar and poured in some metho. The oil paint just sits there like a blob of grease on the bottom of the jar and the metho does not mix with it AT ALL. Even after stirring it up, breaking up the "slug" of paint and shaking the jar vigorously, within minutes I have a slug of blue paint in the bottom and clear metho again in the rest of the jar. I mean, this stuff does not mix at all.
I wonder if the old book I read (could have been Sparey or Bradley etc) meant oil paint powder?? Does such a thing exist? Or is oil paint made from some unsoluable synthetic goop in this day and age?
I looked for methylene blue powder as mentioned in this thread earlier but none of that locally either.
Just wondering if anyone can throw any light?
Edited By Hopper on 06/03/2014 13:59:00