Grizzly MOBILE PLANERS G0453 - Manual (Page 37)

-35- G0453/G0454 (Mfg. Since 3/08)
Machine Operation (continued)
symptom possible Cause possible solution
Fuzzy grain. 1. Workpiece has high moisture content or
surface wetness.
2. dull knives/inserts.
1. sticker and allow workpiece to dry if moisture
content is over 20% or has surface wetness.
2. sharpen/replace knives ( Page 36).
long lines or ridges
that run the length
of the workpiece. 1. nicked or chipped knife. 1. sharpen/replace knives ( Page 36).
uneven cutting
marks, wavy
surface, or chatter
marks across
the face of the
workpiece. 1. Feed rate too fast.
2. Chip breaker or pressure bar set unevenly.
3. one or both of the bed rollers are set too
low or too high.
4. Knife heights not correct.
5. Worn cutterhead bearings.
1. reduce feed rate ( Page 25).
2. Adjust the height of the chip breaker or pressure bar
( Page 40).
3. lower/raise the bed rollers ( Page 26).
4. Adjust knives to the proper height ( Page 36).
5. replace cutterhead bearings.
glossy surface. 1. Knives are dull.
2. Feed rate too slow.
3. depth of cut too shallow. 1. sharpen/replace knives ( Page 36).
2. increase feed rate ( Page 25).
3. increase depth of cut ( Page 26).
inconsistent chip
marks. 1. Chips are not being properly expelled from
around the cutterhead.
1. use an adequate dust collection system; adjust the
chip deflector in or out, depending upon your setup
(
Page 43).