A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
Keora, Sonneratia apetala, Ham. a moderate sized species of the Sunderbans, Bangladesh, was investigated for peeling into 1.5 mm(r/r6 in) thick veneer. Logs were peeled at ambient temperature for determining the optimum knife angle and nose bar pressures in order to get smooth veneer of uniform thickness. Thickness measurements were taken and graphs were plotted. Shewharf’s control charts were used for the determination of optimum values of knife angle and nosebar pressure. It was found that a knife angle of 910 30′ and a horizontal opening of 1.158 mm (0.0456 in) gave the optimum values in the Coe Lathe settings for peeling 1.5 mm (1/16 in) Keora veneer. This limited study reveals that Keora peels well without difficulty. The yield, however, was low compared to most other veneer species. Decay and particularly heart rot, peculiar to this species, are responsible for the low yield.