This is why I use meths so much. I use it for both claying and lampworking. It cleans tools, glass, raw clay etc. It works great for inks, cleaning them off things (I also end up doing lots of stuff where I write on my ceramic tiles with sharpie pens, doing baking tests and so on) also the alcohol inks as a blending solution (flicking it with a toothbrush is fun)
Oh cleaning paintbrushes with inks or liquid clays too - meths is fab for that. And its dirt cheap and available everywhere.
Emma