I use cashew form the above store. Dilute it with distilled turpentine. I don't use gloves. If I get some on my fingers I use the turpentine to clean them Transfer some to a lidded glass jar, I use a plastic spoon since it's a mess trying to pour it. Then dilute and apply. In warm weather it dries fairly quickly. Few layers and you are done.
Just an anecdote. I was lapping a tomo, triangular shape, on an Atoma, no crazy pressure or anything and that thing just split in half. Despite that stone having
very thin layer of kawa on one side and no obvious fissures. Well now I have 2 tomos but it just showed my why it's important to seal.