To use a resin for a composite, the processing conditions must be known. An engineering analysis through numerical simulation of the heat mold cure is useful for this purpose. The chemical systems studied were based in furfuryl alcohol (FA) and furfural. Sulfuric acid was used as catalyst. The kinetics of the reaction was followed by using a quasi-adiabatic calorimeter, taking into account corrections for heat losses. Kinetics parametersE, A, andnwere estimated. A mathematical model involving conservation of energy and chemical species was solved numerically for the FA system. Different types of fibers (glass and cellulose) and different volume fraction were used for the simulation. Some criteria for the process design are stated.