My experience with UHMW (industrial applications) is that it is susceptible to UV damage and becomes more brittle with age. It also is very sensitive to temperature differences and tends to lose its shape after several expansion/contractions. Thirdly it is impossible to glue it either to itself or anything else. I was thinking of a similar project and share your views on wood. I was thinking of the cutting board material as well but have never tried to make anything out of it.
S/V Boccata d'Aria
I'm not sure what Dickens are, but I think they may be important and I sure as hell don't want them scared out of me.......Izzy