Grizzly G1021 instruction manual Planing Difficulties

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Planing Difficulties

The following descriptions of defects will give you some possible answers to problems you may encounter while planing different materials. Possible solutions follow the descriptions.

Chipped Grain - usually a result of cutting against the grain, or planing wood with knots or excessive amount of cross grain. Chipped grain can also be caused by dull knives or misaligned chipbreaker. Often, chipped grain can be avoided by slowing down the feed rate and by taking shal- low cuts. If those options do not work, inspect your lumber and determine if its grain pattern is causing the problem. If the wood does not show substantial crossgrain, inspect your knives for sharpness and inspect the chipbreaker for proper alignment. See the Adjustment Section.

Fuzzy Grain - Usually caused by surfacing lum- ber with too high a moisture content. Sometimes fuzzy grain is a characteristic of some woods, such as basswood. Fuzzy grain can also be caused by dull knives or an incorrect grinding bevel. Check with a moisture meter. If moisture is greater than 20%, sticker the wood and allow to dry. Otherwise, inspect knife condition.

Glossy Surface - Usually caused by dull knives taking shallow cuts at a slow feed speed. Surface gloss will usually be accompanied by overheat- ing. Often, lumber will be scorched and eventual- ly, damage to knives will occur. If knives are sharp on inspection, increase feed speed and/or cutting depth.

Snipe - Occurs when board ends have more material removed than the rest of the board. Usually caused when one or both of the bed rollers are set too high. Can also be caused by the chipbreaker or pressure bar being set too high. However, small amount of snipe is inevitable.

Snipe can be minimized by proper adjustment of the planer’s components, but complete removal of snipe is extremely unlikely. More likely, you will be able to reduce it to a tolerance of .002".

If snipe under that level is a problem, consider planing lumber longer than your intended work length and cut off the excess after planing is com- pleted.

Uneven Knife Marks - Usually an indication that cutterhead bearings are beginning to show signs of deterioration. Uneven knife marks can also occur when the chipbreaker is set too high. Inspect cutterhead bearings if re-adjustment of the chipbreaker fails to remedy the situation.

Chatter Marks - Usually caused by incorrect chipbreaker and pressure bar setting heights. Chatter marks can also be caused by running a narrow wood piece through the planer at either the right or left end of the cutterhead. Chatter, like uneven knife marks, will show in the form of a “washboard” look. Chatter marks are more likely to be inconsistent in appearance than uneven knife marks.

Wavy Surface - Caused by poor knife height adjustment, wavy surface appears when one knife is taking deeper cuts than the rest of the knives. Remedy by re-setting the knives to a tol- erance of ± .001".

Pitch & Glue Build-up- Glue and resin build-up on the rollers and cutterhead will cause over- heating by decreasing cutting sharpness while increasing drag in the feed mechanism. The result can include scorched lumber as well as uneven knife marks and chatter.

Chip Marks - Occur when chips aren’t properly expelled from the cutterhead. The knives catch the chips and drag them across the lumber being planed. Chips tend to be random and non-uni- form (as compared to chipped grain). Can be caused by exhaust blockage or too much room between the cutterhead and chip deflector. Using a dust collection system in combination with the planer can help reduce chip marks. Inspect the chip deflector and re-adjust as described earlier in the text.

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G1021 15" Planer

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Contents Planer Page Table Of Contents Adjustment Block Pattern Warranty and Returns Safety Safety Instructions For Power ToolsSafety Instructions For Power Tools Additional Safety Instructions For Planers Fusing Circuit Requirements220V Operation Grounding Extension CordsIntroduction CommentaryUnpacking Parts InventoryClean Up Site ConsiderationsOptional Stand AssemblyOverview To Mount the Planer Starter SwitchPlaner Unit To Mount the Handwheel Handwheel Knife Setting JigTo Assemble the Knife Setting JIG To Attach the Dust Port Extension Rollers Dust PortTo Attach the Extension Rollers Adjustments Overview of planer adjustment controls G1021 15 PlanerTo Check Table Parallelism Table AdjustmentGauge Block Knife Inspection To Inspect the KnivesKnife Setting To SET the KnivesTo Adjust the Chipbreaker Chip BreakerFeed Roller Height To Check Roller HeightFeed Roller Pressure To Adjust Roller HeightTo Adjust Roller Pressure To Adjust the BED Rollers Bed RollersTo Adjust the Chip Deflector Chip DeflectorTo INSPECT/ADJUST the Pulleys Anti-KickbackBeltsTo Inspect the Gearbox GearboxTo Check Belt Tension Extension Rollers Extension RollersTo Adjust the Scale Thickness ScaleOperations Table LocksDepth Limiter Power FeedHandwheel Test Run Wood Species Type Shear PSIPlaning Difficulties Maintenance GeneralKnivesLubrication Fill DrainAdjustment Section Closure Troubleshooting Symptom Possible Cause Corrective ActionReference 145 79 80 146 See page 41-42 for Reference Number Listing See page 41-42 for Reference Number Listing Pulley Cover PK06M G1021 15 Planer Warranty and Returns
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