Thanks for the replies guys - yes, the fridge is well used! summer is starting and we have bad bush fires all around Sydney at the moment.
Now the ribs. first go at working with the Hysol although we have built a 40ft yacht before and have had a bit of experience at handling expoxy etc. We use a lot of marking tape! The syringes are useful but have read a lot of comments of peoples improvisations and will try a few. We found the ribs to need a bit of trimming and the little bandsaw was great for that. You will also see in one of the photos that we have elderly advisor - that is our friend Noel who is about to turn 102 yo!