Thanks for the reply Charles, I'm only looking for the plan for the time being though as I have access to a friend's laser cutter (and I'm in the UK so delivery would be a pain!)
Do you sell the plans separately though? It would need to be in a digital format so I can convert the ribs and formers etc to load on the laser cutting software, I just can't find any plans online, Unfortunately my plan is soo ruined and wet that I can't make out who designed it!