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 | Remedy | |
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Inadequate support of long boards. | Support long boards with extension | |
| rollers. | |
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Dull knives. | Sharpen knives. | |
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Lumber not butted properly. | Butt end to end each piece of stock | |
| as they pass through. | |
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Planing wood with high moisture | Remove high moisture content from | |
content. | wood by drying. | |
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Dull knives. | Sharpen or replace. | |
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Too heavy a cut. | Adjust proper depth of cut | |
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Knives cutting against grain. | Cut along the grain. | |
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Dull knives. | Sharpen knives. | |
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Dull knives. | Sharpen knives. | |
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Too heavy a cut. | Adjust proper depth. | |
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Moisture content too high. | Remove high moisture content from | |
| wood by drying. | |
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Dull knives. | Sharpen or replace knives. | |
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Feed speed too slow. | Increase speed. | |
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Cutting depth too shallow. | Increase depth. | |
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Planer bed rough or dirty. | Clean pitch and residue, and wax | |
| planer table. | |
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Surface of feed rollers clogged. | Clear residue chips off of rollers. | |
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Knife incorrectly set. | Adjust knives. | |
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Depth of cut scale incorrect. | Adjust depth of cut scale. | |
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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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Cutting too deeply. | Make shallower cuts. | |
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