Machine Operation (continued)
Symptom | Possible Cause | Possible Solution | |||
Fuzzy grain. | 1. | Workpiece has high moisture content or | 1. | Sticker and allow workpiece to dry if moisture | |
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| surface wetness. |
| content is over 20% or has surface wetness. | |
| 2. | Dull knives/inserts. | 2. | Sharpen/replace knives (Page 36). | |
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Long lines or ridges | 1. | Nicked or chipped knife. | 1. | Sharpen/replace knives (Page 36). | |
that run the length |
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of the workpiece. |
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Uneven cutting | 1. | Feed rate too fast. | 1. | Reduce feed rate (Page 25). | |
marks, wavy | 2. | Chip breaker or pressure bar set unevenly. | 2. | Adjust the height of the chip breaker or pressure bar | |
surface, or chatter |
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marks across |
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3. | One or both of the bed rollers are set too | 3. | Lower/raise the bed rollers (Page 26). | ||
the face of the | |||||
| low or too high. |
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workpiece. |
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4. | Knife heights not correct. | 4. | Adjust knives to the proper height (Page 36). | ||
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| 5. | Worn cutterhead bearings. | 5. | Replace cutterhead bearings. | |
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Glossy surface. | 1. | Knives are dull. | 1. | Sharpen/replace knives (Page 36). | |
| 2. | Feed rate too slow. | 2. | Increase feed rate (Page 25). | |
| 3. | Depth of cut too shallow. | 3. | Increase depth of cut (Page 26). | |
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Inconsistent chip | 1. | Chips are not being properly expelled from | 1. | Use an adequate dust collection system; adjust the | |
marks. |
| around the cutterhead. |
| chip deflector in or out, depending upon your setup | |
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| (Page 43). | |
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G0453/G0454 (Mfg. Since 3/08) |
