Troubleshooting Marking, Grooving and Incompleteness

Marking of Stock

Indentations left by the serrations in the lower feed
chains.
Improper pressure setting. Reduce the pressure setting.
Incorrect adjustment of the splicer. Check the adjustment of the lower heater bar, upper
heater bar, and the pressure shoes.

Grooving Along the Glue Line

Gouges or indents in the veneer next and parallel to
the glue line. Can be either top or bottom face.
Build up of crystallized glue on either the upper heater strip or
lower heater bar.
Excessive glue on the veneer is the source of the problem. Clean
the upper strip and lower bar. If scraping is necessary use only soft
materials such as wood, brass, or bronze. Running a heavy piece of
veneer crossways through the splicer will usually clean them.
Nicks or burrs on the upper strip or lower heater bar. Repair or replace.

Incomplete Glue Joint

The leading end of the veneer is spliced but the trailing end is
open.
The edges of the veneer are not parallel. Check the jointer.