Photographs and SEM studies the structural changes in boards with different drying method shown in Figs. 4–7. The photographs shown in Fig. 4a-4d of cross-sectional area at a) 50C, b)60C, c)80C and d)100C by convection drying.As seen, a large cavity appears in the inner section of these samples of much pore and hiatus, depending on the temperature increases. The photographs shown in Fig. 5a-5d by microwave drying to structural dense and power level 4000w was burned in wood interior