Jet JJP-12 Operating Instructions And Parts Manual page 21

Planing:
1. Position the workpiece with the face to be
planed on top.
2. Turn the planer on.
3. Turn the power feed on.
4. Rest the board end on the infeed roller plate
and direct the board into the planer.
5. Slide the workpiece into the infeed side of
the planer until the infeed roller begins to
advance the workpiece.
6. Let go of the workpiece and allow the
automatic feed to advance the workpiece.
7. Do not push or pull on the workpiece. Move
to the rear and receive the planed lumber by
grasping it in the same manner that it was
fed.
To avoid the risk of injury
due to kickbacks, do not stand directly in
line with the front or rear of the planer.
8. Do not grasp any portion of the board that
has not gone past the outfeed roller.
9. Repeat this operation on all of the boards
that need to be the same thickness.
Avoiding Snipe
Snipe refers to a depression at either end of the
board caused by an uneven force on the
cutterhead when the work is entering or leaving
the planer.
Snipe will occur when the boards are not
supported properly or when only one feed roller
is in contact with the work at the beginning or
end of the cut.
Precautions for avoiding snipe:
Push the board up while feeding the work
until the outfeed roller starts advancing it.
Move to the rear and receive the planed
board by pushing it up when the infeed roller
looses contact with the board.
When planning more than one board of the
same thickness, butt the boards together to
avoid snipe.
Make shallow cuts. Snipe is more apparent
when deeper cuts are taken.
Feed the work in the direction of the grain.
Work fed against the grain will have
chipped, splintered edges.
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