A radical new approach to composite tooling The Compotool system Compotool is a radical new matched pattern and prepreg mould tooling system. Compotool tooling board has very high thermal stability and excellent machining characteristics and can be used as a high accuracy pattern material or for prototype and short run direct tooling. The Compotool range of tooling prepregs has been specifically developed to complement the thermal characteristics of the Compotool board. Compotool prepregs offer superior handling characteristics and extended working life. High accuracy composite tooling can be produced in a single combined cure/post-cure cycle reducing demand on autoclave time.