Peeling Veneer with a Floating Bar: Effect of Bar Pressure on Veneer Quality

Veneer cutting trials were conducted on a lathe equip ped with a floating (pressure-controlled) nose bar using pressures of 20 to 90 pounds per linear inch (pli) of log. Results indicated that roughness and depth of lathe checks generally decreased as pressure increased. The effect of pressure was more pronounced on veneer peeled with a flat bar than with a roller bar. This effect was more noticeable on thick veneer. Pressure variation also had a greater effect on veneer quality when a low vertical gap was used rather than a high one. A pressure range of 20 to 60 pli for the flat bar, or 20 to 80 pli for the roller bar, was satisfactory using the 4-foot laboratory lathe. The quality of the veneer peeled with either floating bar was high and equal to that of veneer peeled with standard (non-floating) bar.

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