This stuff is not easy to work with. WARNING...graphite is evil. It will get into...dust over...anything and everything.
Lay out some paper towel before you start.
The ratio was listed on one YouTube video was volumetric....imperial though....1 ounce of paint to 3 x teaspoons of graphite. So a google conversion from USA volumes to metric gave me roughly....30ml paint to 3 x 5ml (15) of graphite.
I have a measuring cup and that works well for the graphite.....then just tip it into the container. (Oh get a bigger one then mine.)
The paint measures fine as well. But how do you get it out....it is like honey....lots of end of spoon scraping.
Mixing was fun too.....dribbles of water and end of teaspoon stirring until no more gritty feelings.
I have a consistency of a thick shake will a little fine ground salt in it. One small strip on a double layer of paper towel.
The absorbent nature of the towel may be closer to unsealed wood than I thought. I will leave it for an hour and put another layer on.
I have dug out my multi-meter and will see firstly if we have continuity and then see if I can measure the resistance. Maybe somebody here would be able to advise if the end result resistance is any good as a shield to R.F.I.
Lunch Time now.