9
Palmgren Operating Manual & Parts List
84115
OPERATION (CONTINUED)
•
Work should be fed into planer/molder in same direction as the
grain of the wood. Sometimes grain will change directions in
middle of board. In such cases, if possible, cut board in middle
before planing so grain direction is correct.
CAUTION:
Do not plane board which is less than 17
″
long; force
of cut could split board and cause kickback.
PLANING
WARNING:
Always turn the planer/molder off and disconnect it
from the power source whenever blade cover is removed. Never
operate planer/molder without the blade cover properly secured.
The planer/molder is supplied with planing blades mounted in the
cutterhead and the infeed and outfeed rollers adjusted to the correct
height.The planer/molder is capable of working at two different feed
rates. Feed rate refers to rate at which lumber travels through plan-
er/molder. Planing can be done at 22 FPM (standard planing) or at 11
FPM for an improved surface finish (see Feed Rate Adjustment).
•
Position rollercase to produce the depth of cut desired.
•
Operator is responsible for aligning work so it will feed properly.
•
Lift edge to infeed side of the table by grasping edges of board
at approximately middle of length.
•
Boards longer than 24
″
should have additional support from
free standing material stands.
•
Position the workpiece with the face to be planed on top.
•
Turn the planer/molder on.
•
Rest board end on infeed table and direct board into planer/molder.
•
Gently slide the workpiece into the infeed side of the planer/
molder until the infeed roller begins to advance the workpiece.
•
Let go of the workpiece and allow automatic feed to advance
the workpiece.
•
Do not push/pull on workpiece.
•
Move to the rear and receive planed lumber by grasping it in
same manner as it was fed.
CAUTION:
Do not stand directly in line with front or rear of planer/
molder.
•
Do not grasp any portion of board which has not gone past
out-feed roller.
•
Repeat this operation on all boards which need to be same thickness.
Planer/molder has return rollers on top so assistant can pass work
back to operator (see Figure 20).
NOTE:
Assistant must follow same precautions as operator.
•
Surface that the planer/molder produces is smoother if shal-
lower depth of cut is used.
DEPTH OF CUT
Thickness planing refers to the sizing of lumber to a desired thick-
ness while creating a level surface parallel to the opposite side of
the board. Board thickness which the planer/molder will produce is
indicated by the scale, and depth-of-cut-gauge. Preset the plan-
er/molder to the desired thickness of finished workpiece using
knob. See “Workpiece Thickness Pre-set Gauge”, page 8.
Depth-of-cut is adjusted by raising or lowering the rollercase using
handle.
•
Quality of thickness planing depends on the operator’s judge-
ment about the depth of cut.
•
Depth of cut depends on the width, hardness, dampness, grain
direction and grain structure of the wood.
•
Maximum thickness of wood which can be removed in one
pass is
3
/
32
″
for planing operations on workpiece up to 8
″
wide.
Workpiece must be positioned away from the center line of the
table to cut
3
/
32
″
.
•
Maximum thickness of wood which can be removed in one
pass is
1
/
16
″
for planing operations on workpiece from 8
″
up to
15
″
wide.
•
For optimum planing performance, the depth of cut should be
less than
1
/
16
″
.
•
Board should be planed with shallow cuts until the work has a
level side. Once a level surface has been created, flip the lumber
and create parallel sides.
•
Plane alternate sides until the desired thickness is obtained.
When half of total depth of cut is taken from each side, the
board will have a uniform moisture content and additional
drying will not cause it to warp.
•
Depth of cut should be shallower when work is wider.
•
When planing hardwood, take light cuts or plane the wood in
thin widths.
•
Make a test cut with a test piece and verify the thickness produced.
•
Check accuracy of test cut prior to working on finished product.
AVOID DAMAGE TO BLADES
•
Thickness planer/molder is a precision woodworking machine
and should be used on quality lumber only.
•
Do not plane dirty boards; dirt and small stones are abrasive
and wear out blade.
•
Remove nails and staples. Use planer/molder to cut wood only.
•
Avoid knots. Heavily cross-grained wood makes knots hard.
Knots can come loose and jam blade.
CAUTION:
Any article that encounters planer/molder blades may
be forcibly ejected from planer/molder creating risk of injury.
AVOIDING SNIPE
•
Snipe refers to a depression at either end of board caused by
an uneven force on cutterhead when work is entering or leav-
ing planer/molder.
•
Snipe occurs when boards are not supported properly or when
only one feed roller is in contact with work at beginning or end
of cut.
•
To avoid snipe on the lead edge of the workpiece, adjust the
infeed table up slightly above horizontal.
•
To avoid snipe on the trailing edge of the workpiece, adjust the
outfeed table up slightly above horizontal.
•
When planing more than one board of the same thickness, butt
boards together to avoid snipe.
•
Snipe is more apparent when deeper cuts are taken.
•
Feed work in direction of grain. Work fed against grain will have
chipped, splintered edges.
Figure 20 – Workpiece on the Return Rollers
