Troubleshooting
Performance Troubleshooting – Jointer
Trouble
Finished stock is concave on back end.
Finished stock is concave on front end.
Chip out.
Fuzzy grain.
Cutterhead slows while operating.
“Chatter” marks on workpiece.
Uneven knife marks on workpiece.
Probable Cause | Remedy | |
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| Align cutterhead knives with outfeed | |
Knife is higher than outfeed table. | table. See Cutterhead Knife | |
| Adjustment on page 15. | |
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| Align cutterhead knives with outfeed | |
Outfeed table is higher than knife. | table. See Cutterhead Knife | |
| Adjustment on page 15. | |
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Cutting against the grain. | Cut with the grain whenever possible. | |
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Dull knives. | Sharpen or replace knives. | |
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Feeding workpiece too fast. | Use slower rate of feed. | |
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Cutting too deeply. | Make shallower cuts. | |
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| Inspect wood closely for | |
Knots, imperfections in wood. | imperfections; use different stock if | |
| necessary. | |
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Wood has high moisture content. | Allow wood to dry or use different | |
stock. | ||
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Dull knives. | Sharpen or replace knives/inserts. | |
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Feeding workpiece too quickly, or | Feed more slowly, or apply less | |
applying too much pressure to | ||
pressure to workpiece. | ||
workpiece. | ||
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| Set knives properly as described in | |
Knives incorrectly set. | the Cutterhead Knife Adjustment on | |
page 15. Check that knife slots are | ||
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| clean and free of dust or debris. | |
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Feeding workpiece too fast. | Feed workpiece slowly and | |
consistently. | ||
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Cutting too deeply. | Make shallower cuts. | |
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Knives are nicked, or out of | Align knives per the Cutterhead Knife | |
Adjustment on page 15. Replace | ||
alignment. | ||
nicked knives. | ||
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