Jet JJP-10BTOS Operating Instructions And Parts Manual page 24

Performance Troubleshooting – Planer
Trouble
Snipe
Note: Snipe can be
minimized but not
eliminated
Fuzzy Grain
Torn Grain
Rough/Raised Grain
Rounded, glossy
surface
Uneven depth of cut
side to side.
Board thickness does
not match depth of
cut scale.
"Chatter" marks on
workpiece.
Probable Cause
Inadequate support of long boards.
Dull knives.
Lumber not butted properly.
Planing wood with high moisture
content.
Dull knives.
Too heavy a cut.
Knives cutting against grain.
Dull knives.
Dull knives.
Too heavy a cut.
Moisture content too high.
Dull knives.
Feed speed too slow.
Cutting depth too shallow.
Planer bed rough or dirty.
Surface of feed rollers clogged.
Knife incorrectly set.
Depth of cut scale incorrect.
Knives incorrectly set.
Cutting too deeply.
Remedy
Support long boards with extension
rollers.
Sharpen knives.
Butt end to end each piece of stock
as they pass through.
Remove high moisture content from
wood by drying.
Sharpen or replace.
Adjust proper depth of cut
Cut along the grain.
Sharpen knives.
Sharpen knives.
Adjust proper depth.
Remove high moisture content from
wood by drying.
Sharpen or replace knives.
Increase speed.
Increase depth.
Clean pitch and residue, and wax
planer table.
Clear residue chips off of rollers.
Adjust knives.
Adjust depth of cut scale.
Set knives properly as described in
the Cutterhead Knife Adjustment on
page 15. Check that knife slots are
clean and free of dust or debris.
Make shallower cuts.
24