Williams & Hussey
Toll Free: 800-258-1380
17
TROUBLESHOOTING
CHATTER
- Chatter marks are irregularities in the finish quality of the surface of the wood. They
can be evenly spaced or randomly distributed.
Chatter marks are caused by vibration. Below is a list of possible causes of vibration.
●
Is the head locked in place?
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Is the motor tensioner locked?
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Is the head height set correctly?
o
If the head setting is incorrect this could cause lack of proper roller tension.
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Are your knives sharp?
o
Dull knives cause intermittent feeding.
●
How is the belt condition?
o
Belt should be running smoothly. Belt should be aligned on the pulley correctly.
SNIPE -
Snipe is generally an undercut in the stock. It occurs in the first and last few inches of
the stock length. Snipe occurs when the knives hit the stock before outfeed roller engages and
when the stock leaves infeed roller. The suggestions below are to minimize snipe.
1.
Use a jointer for cupped, warped or twisted stock.
2.
Lock the head in place.
3.
Butt the stock pieces tight end to end.
4.
Put slight upward pressure during infeed and outfeed operation.
5.
If using infeed and outfeed supports for long boards, set supports slightly higher than the
molder bed.
6.
Use slightly longer stock length than needed and cut off snipe.
STOCK MARKS
– Along with chatter & snipe another cause of irregular marks on stock would
be using incorrect knife attaching screws. Our molders are shipped with (12) 3/8-16 X 1” button
head cap screws. Use (1) screw for each hole on the knife, do NOT use a washer. Adding to the
height of the screw may result in the screw head hitting the stock causing marks.
