Thanks for the great advice.
I do have one of those at home in Denmark and have used it for this purpose. But he tip about getting it full by rolling it in paint is probably what i didn't do. So thats what I'll try.
Allan, it is a relief to me that you have also had to make several attempts at this. One of my teachers, American painter Francis Cunningham, always said he dreaded this work because of the same difficulties.
Cynthia, What medium do you thin the color with, or is it of minor importance? How long is your liner? 1''?
Best wishes
Mikael