+xI would look potentially at a stabilised cloth such as our
ProFinish Carbon Fibre 2/2 Twill 3k 210g. You can cut the fabric with very little fraying and neat crisp cut lines. You could almost make a paper template as if you were making it from paper or card, with overlaps etc then cut the ProFinish cloth from the template and even pre-fold and crease the fabric so it fits in nicely. You might find a spray tack useful if it keeps springing away from the mould faces or tries to lift up.
Hi Warren..
Thanks ill look at getting the twill mentioned..
With the cloth having to be cut fraying was a concern..