Troubleshooting – Operating Problems
Trouble
Finished stock is concave on back end.
Finished stock is concave on front end.
Stock has slight bevel after edge jointing.
Chip out.
Fuzzy, rough, or torn grain.
Board thickness does not match depth of cut scale.
Cutterhead slows while operating.
“Chatter” marks on workpiece.
Uneven knife marks on workpiece.
Probable Cause | Remedy | |
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Knife is higher than outfeed table. | Raise outfeed table until it aligns with | |
tip of knife. See pages | ||
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Outfeed table is higher than knife. | Lower outfeed table until it aligns with | |
tip of knife. See pages | ||
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Fence not perpendicular to table. | Square up fence with table. | |
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Cutting against the grain. | Cut with the grain whenever possible. | |
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Dull knives/knife inserts. | Sharpen or replace knives. | |
Rotate knife inserts. | ||
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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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Knots, imperfections in wood. | Inspect wood closely for 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/knife inserts. | Sharpen or replace knives. | |
Rotate knife inserts. | ||
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Knives are cutting against grain. | Cut with the grain. | |
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Depth of cut scale is incorrect. | Loosen screw and adjust scale | |
accordingly. | ||
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Feeding too quickly, or applying too | Feed more slowly, or apply less | |
much pressure to workpiece. | pressure to workpiece. | |
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Excessive depth of cut. | Reduce depth of cut. | |
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Dull knives/knife inserts. | Sharpen or replace knives. | |
Rotate knife inserts. | ||
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Knives incorrectly set on straight | Set knives properly using provided knife | |
setting gauge. Check that knife slots | ||
cutterhead. | ||
are clean and free of dust or debris. | ||
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Feeding workpiece too fast. | Feed workpiece slowly and | |
consistently. | ||
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| Straight cutterhead: Replace nicked | |
Knives are nicked, or out of | knives; align knives properly using | |
alignment. | Helical cutterhead: Rotate nicked | |
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| inserts. See page 16. | |
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