Hama beads-clear boards available?

[IWasThere4Aug12]

Are clear boards available for Hama beads? Would make it so much easier to put a template under them!
I've found clear boards for Perler beads in the US - are they interchangeable? Antone know where I could get them in the UK?
TIA

Hama themselves do one - that you can click together multiples of.. www.hamabeads.com/transparent_square_710.htm

Thanks - that's made my day