This was what I was wondering about, this guy used polystyrene to shape the core, and then laminate over it.
http://www.instructables.com/id/How-I-built-a-carbon-bike-frame-at-home-and-a-bam/step2/Making-the-core/
@Dendenium started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
This was what I was wondering about, this guy used polystyrene to shape the core, and then laminate over it.
http://www.instructables.com/id/How-I-built-a-carbon-bike-frame-at-home-and-a-bam/step2/Making-the-core/