-38-
G0890/G0891 (Mfd. Since 06/19)
Symptom
Possible Cause
Possible Solution
Fuzzy grain.
1. Wood may have high moisture content or
surface wetness.
2. Dull knives/inserts.
1. Check moisture content is below 20% and allow to
dry if moisture is too high.
2. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 29).
Long lines or ridges
that run along length
of board.
1. Nicked or chipped knife/inserts.
1. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 29).
Uneven cutting`
marks, wavy surface,
or chatter marks
across face of board.
1. Feeding workpiece too fast.
2. Knives not installed evenly/inserts not
properly installed.
3. Worn cutterhead bearings.
1. Slow down feed rate.
2. Adjust knives with knife gauge (
Page 27); remove
inserts, properly clean mounting pocket and re-
install (
Page 29).
3. Replace cutterhead bearings.
Glossy surface.
1. Knives/inserts are dull.
2. Feeding workpiece too slow.
3. Cutting depth too shallow.
1. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 29).
2. Increase feed rate.
3. Increase depth of cut.
If workpiece twists in
machine.
1. Feed rollers not parallel with table.
1. Adjust feed rollers (
Page 40).
Machine Operation (Cont.)
Summary of Contents for G0890
Page 60: ......
