I couldn't find a supplier in the UK so I ordered from Dick Blick's in the US, and sent for both black and white Ampersand claybord in various sizes.
The ampersand website has a great deal of useful information on using the claybord with various media.
I have been wanting to try scratchboard/scraperboard work for a while so decided to start with a small piece of the black and use a combination of coloured pencil, gouache, acrylic and scratching.
I transferred my pencil drawing from rough paper to the claybord using white tracedown paper and as always started with the eyes.
I used a base coat of gouache, scraped a little and then put several heavy layers of coloured pencil on top.I will need to show you some detail in my next post, which will also show my homemade scratching tool.