[Aussie Mike]

It's pretty neat stuff. Rather than using a spray can to dust a panel to check for highs and lows this stuff just rubs on. It's basically some black carbon like dust in a pot with a sponge applicator. you just load the sponge up with dust by tipping it over a few times and then rub it on the panel.

No waiting for it to dry, just sand straight away. Its supposed to not react with any paint put over it as well.

I figure since I'm still learning to read the highs and lows so I'd use this stuff to more regularly coat the panel as I sand. So I dust the panel and sand a bit find my highs and lows, dust again and just keep working my way over the panels. Having the pot just sitting there means it's dead easy to keep checking.

Cheers