The Build...

The Plycycle is a wooden framed bicycle, made from 12mm birch ply, laminated together with epoxy resin. It is hand shaped and finished and is hollow to reduce the weight, the whole finished bike weighs 13kg, I forgot to weigh the frame on its own, doh! The forks and wheels are not the lightest by any stretch The headset, bottom bracket and rear dropouts are all bespoke but using standard fittings. The Plycycle is fixed gear.
 
The full design and build process is catalogued in a blog called BUILDINGAWOODENBIKE .