... comment below. My advice is to try composite, ply and even plastic if you like and see which you get on best with. I know composite build is popular, but I think if you're going to use ply- stick with ply. Good luck. Last edited on 11 Nov 2015 16:50 by DerekStuart posted: 11 Nov 2015 13:45 from: Martin Wynne DerekStuart wrote: check rail chairs are always 4 bolts. Hi Derek, Never say "always". GWR check chairs have 2 screws: 2_110834_520000000.jpg GWR check chair drawings here: http://scalefour.org/downloads/gwrtracknotes/R1782.pdf And they are not bolts. On most companies they are chair screws. GWR chairs have through-bolts from below on plain-track sleepers, and chair screws from above on pointwork timbers, as above. regards, Martin. posted: 11 Nov 2015 15:30 from: Nigel Brown DerekStuart wrote: If I may suggest an alternative, I would recommend using ply timbers throughout and avoiding copper clad. For much the same ...