Troubleshooting Burning, Burnishing and Crimping

Burning of Veneer

Dark brown scorch lines on either side of the glue line.
Usually dominant on the bottom side from the lower heater bar.
Excessive heat from either the upper or lower heater
bar. Also crystallizes the glue.
Lower the temperature setting. See temperature/thickness
chart.
Increase the feed rate.

Burnishing of Veneer

Crushed and shiny surface along the glue line. Too much pressure. Check the pressure setting.

Crimping of Veneer

The veneer is crimped within 1″ of
either side of the glue line.
The inside edges of the feed chains are
worn.
Replace the feed chains.
Reduce the pressure.