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Troubleshooting – Operating Problems
Trouble Probable Cause Remedy
Finished stock is
concave on back
end.
Knife or knife insert is higher than
outfeed table.
Raise outfeed table until it aligns with
tip of knife/insert. See page 19.
Finished stock is
concave on front end.
Outfeed table is higher than knife or
insert.
Lower outfeed table until it aligns with
tip of knife/insert. See page 19.
Finished stock is
concave in the
middle.
Both tables have too much end fall.
Raise both table ends using the cam
adjustment devices. See pages 17-18.
Ends of finished
stock are cut more
than the middle.
Table ends are raised higher than the
middle.
Lower both table ends using the cam
adjustment devices. See pages 17-18.
Chip out.
Cutting against the grain. Cut with the grain whenever possible.
Dull knives or knife inserts.
Sharpen or replace knives.
Rotate or replace knife inserts.
Feeding workpiece too fast. Use slower rate of feed.
Cutting too deeply. Make shallower cuts.
Knots, imperfections in wood.
Inspect wood closely for imperfections;
use different stock if necessary.
Fuzzy grain.
Wood has high moisture content. Allow wood to dry or use different stock.
Dull knives or knife inserts.
Sharpen or replace knives.
Rotate or replace knife inserts.
Cutterhead slows
while operating.
Feeding workpiece too quickly, or
applying too much pressure to
workpiece.
Feed more slowly, or apply less
pressure to workpiece.
Chatter marks on
workpiece (standard
cutterhead).
Knives incorrectly set.
Set knives properly using provided knife
setting gauge. Check that knife slots
are clean and free of dust or debris.
Feeding workpiece too fast.
Feed workpiece slowly and
consistently.
Uneven knife marks
on workpiece.
Knives or knife inserts are nicked or
out of alignment.
Replace nicked knives or rotate inserts;
align standard knives properly using
knife-setting gauge. See pages 18-22.