Thread: Ozuku JNat: problem using shellac

Originally Posted by heirkb

Wow, thanks for all that great info. I'll have to try to get this current coat of shellac off and see what I can do. The weird thing is that the current coat has actually started to look a lot better and isn't getting prints on it anymore. I'll keep it for a few more days and see if the issue was the heat/quantity of water that it was in contact with during the lapping.

It's looking better and holding up better now because it's cured.

Without seeing it, I'd still be thinking that what's on there is compromised. You can see how long it lasts but it might not be sealing properly and then, when some moisture seeps into your stone, it might hold more of that moisture in and for longer- the exact opposite of the purpose of sealing it.

Were I you I'd be tempted to soak a good lint-free cloth or non-shedding brush in denatured alcohol and neatly "slop" as much onto the shellac as I could, over the course of 10-15 mins or so- however long it takes to re-soften it. This will re-activate the shellac that's on there, allowing it to then cure moisture free, in a more even coating, and therefore make a newer and better and more durable seal. May as well slap a few 50/50 (equal parts can solution and denatured alcohol) while you're at it.

A quart of denatured alcohol should be a few bucks at any hardware store.

Anyway, good luck with it. It's always fun to experiment with something new!