I did though get the base in position. It is a very durable and water resistant plyboard used for shuttering concrete formwork. It will be just the job for the base.
Did a bit more timber stud work too, but need some more of the self taping screws before I can do much more. I am also having a bit of a problem sourcing the dimpled aluminum to clad the sides, so may have to change to something else.
To make up for doing the dull stuff thought I would get the door frame in position. Will probably make another door but the frame is good. Well thats about it, will have to do a bit on the spare room tomorrow but may get a bit of time in the afternoon to get some more bits.