• @BigH @neil-bah for this little 20" disc I don't think I'll need a core. It's so small and wide I think it'll be plenty stiff with M55J or HM63 fibre and the rim bonded in. It won't delam with HM63 but it might be a risk with M55. I'll definitely need a core with a flat 700C disc, but foam will be stiffer and easier to work with than honeycomb core. I have both, so see what pans out, but I'd still love to do a fat hollow lenticular if I can come up with a suitable mould.


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