The defects investigated were spike marks, conveyer marks, pressure roller stain, drying checks, machine gouge, and machine burn in terms of their occurrence, size, and impact on yield.
Mechanical defects included in this analysis were spike marks, conveyer marks, pressure roller stain, drying checks, machine gouge, and machine burn. Defects are listed in the order in which they occur during processing.
Machine burn is a darkening, or charring, of the wood due to overheating by the machining knives when a piece is stopped in a machine.
Machine burn lowered yield by 0.6 percent for the Furniture cutting order (Table 5) and 0.6 percent for the Panel cutting order (Table 6).
Manufacturing defects such as machine burn, conveyer marks, and machine gouge can be related back to drying defects, such as checks and warp that may cause board handling problems, mostly at the planer mill.
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more calories for each -individual's particular regimen--some stay on the elliptical longer, even if at lower levels of exertion, yet for others the machine is an awkward and tiresome bore.