Hi Andrew,
That sounds really cool !
I have a 1.3 x 1.5m router which has about 70mm Z working height.
The length is a little short, but, segmenting the job could work OK.
I am also interested in getting experience with composite fabrication of RC models so Im sure something is possible!
I have built a few with divinycell/foam/carbon recently, but they are quite agricultural, but- functional ... Something shiny and sleek would look so nice!
Cheers,
Seppo