TROUBLESHOOTING FEED PROBLEMS ON THE THROUGH FEED MOULDER – CAUSED BY MATERIAL

TROUBLESHOOTING FEED PROBLEMS
ON THE THROUGH FEED MOULDER –

CAUSED BY MATERIAL

Probable Cause

How to Correct

Wet lumber. With some exceptions most lumber produces a better finish
at 7% to 9% moisture content.
Warped twisted or bowed stock. As much as possible keep the bow (concave side) of
the board down and to the right guide.
Wax tar or chemical on stock. Trim ends of material.
Un-square stock. Mostly effects short material. Adjust the chop saw
to cut square ends.
Stock dimensions vary more than 1/4″. Variations in material greater than 1/4″ can create
jams in the machine. Look into stock preparation.
Pitch build-up on guides or bed plates. When running soft woods it may be necessary to clean
the machine more often. Increasing the bed lubrication can help.
Soft spot or dry rotted area of the material. Look into stock preparation.
Case hardened Material. Check the material drying process.
Dry lumber. Moisture contents below 6% become harder to machine.
Check the material drying process.
Knots or slivers of wood jammed in the machine. Clean the machine. Look into stock preparation.
Length shorter than the self-feed length. Keep the material butt fed into the machine. Try hopper
or conveyor feed systems.