Troubleshooting – Operating Problems

Trouble

Finished stock is concave on back end.

Finished stock is concave on front end.

Finished stock is concave in the middle.

Ends of finished stock are cut more than the middle.

Chip out.

Fuzzy grain.

Cutterhead slows while operating.

“Chatter” marks on workpiece.

Probable Cause

Remedy

 

 

Knife is higher than outfeed table.

Raise outfeed table until it aligns with

tip of knife. (see page 13)

 

 

 

Outfeed table is higher than knife.

Lower outfeed table until it aligns with

tip of knife. (see page 13)

 

 

 

Both tables have too much end fall.

Raise both table ends using the

 

adjustment screws below the tables

 

(see Figure 35).

 

Figure 35

 

 

Table ends are raised higher than the

Lower both table ends using the

adjustment screws under the tables

middle.

(see Figure 35).

 

 

 

Cutting against the grain.

Cut with the grain whenever possible.

 

 

Dull knives/inserts.

Sharpen or replace knives/inserts.

 

 

Feeding workpiece too fast.

Use slower rate of feed.

 

 

Cutting too deeply.

Make shallower cuts.

 

 

Knots, imperfections in wood.

Inspect wood closely for imperfections;

use different stock if necessary.

 

 

 

Wood has high moisture content.

Allow wood to dry or use different stock.

 

 

Dull knives/inserts.

Sharpen or replace knives/inserts.

 

 

Feeding workpiece too quickly, or

Feed more slowly, or apply less

applying too much pressure to

pressure to workpiece.

workpiece.

 

 

 

 

Set knives properly using provided knife

 

setting gauge (straight cutterhead only

Knife/inserts incorrectly set.

– see page 15). Check that insert slots

 

are clean and free of dust or debris

 

(helical cutterhead only).

 

 

Feeding workpiece too fast.

Feed workpiece slowly and

consistently.

 

 

 

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Powermatic 1285 operating instructions Troubleshooting Operating Problems, Probable Cause Remedy