Sorry, I have no Idea what the Twincat weighs but I would be very interested to find out.

Twintex is Vacuum molded, The hulls are one piece i.e there is no joining of the two halves required.

Twintex is a prepreg material, you lay it up dry in the two halves of the mold, join the two halves and apply vaccuum and pressure. Then when you take the two halves apart you have a finished one piece hull. It needs to get to 200c to fully process. Twintex looks like a bulky cloth before it is processed.

All the best

Gareth