0 Cutted te main wing Posted on 22/12/2012 by Christian Cutted the main wing from 6mm Depron. And i will use 4mm round plywood instead of Carbon. Why? Because i could not get carbon spars within 24h and you can buy this almost everywhere. Costs: 1 meter, 4mm diameter. 0,65 € Weigth: 11 gram/meter