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Model W1873/W1874 (For Machines Mfd. Since 10/20)
O
PE
R
ATIO
NS
Chip.Marks.or.Indentations
Problem:.
Chip indentation or chip bruising is the
result of wood chips not being ejected from the
machine. Instead they are carried around the
cutterhead, deposited on the planed surface and
crushed by the outfeed roller. Some causes of
chip indentation are:
•.
Wood chips/sawdust not being properly
expelled from the cutterhead.
•.
The type of workpiece being planed.
Certain species of wood have a tendency to
chip bruise.
•.
High moisture content (over 20%) or surface
moisture (refer to
Workpiece.Inspection
).
•.
Dull knives/inserts.
•.
Excessive depth of cut.
Solution:
•.
Use a proper dust-collection system; adjust
chip deflector in or out as necessary.
•.
Workpiece must be completely dry,
preferably kiln-dried (KD). Air-dried (AD)
lumber must be seasoned properly and
have no surface moisture. DO NOT surface
partially-air-dried (PAD) workpiece.
•.
Make sure planer knives/inserts are sharp.
•.
Reduce depth of cut.
Pitch.&.Glue.Buildup.
Problem:.
Glue/resin buildup on the rollers and
cutterhead will cause overheating by decreasing
cutting sharpness while increasing drag in the
feed mechanism. This can result in scorched
workpieces, uneven knife/insert marks, and
chatter.
Solution:.
Clean the rollers and cutterhead.
Rippled.Cut.
Problem:.
Regularly spaced indentations across
face of workpiece are caused by excessive
outfeed roller pressure or excessive feed rate.
Solution:.
Reduce outfeed roller pressure; reduce
feed rate.
