Make sure your workpiece exceeds the
minimum dimension requirements shown
below before processing it through the jointer,
or the workpiece may break or kick back
during the operation.
With Grain
Against Grain
CORRECT
INCORRECT
FEED DIRECTION
ROTATION
ROTATION
INFEED TABLE
OUTFEED TABLE
OUTFEED TABLE
INFEED TABLE
FEED DIRECTION
Figure 18. Proper grain alignment with cutterhead.
10" Min.
¼" Min.
¾" Min.
10" Min.
¾" Min.
½" Min.
Figure 19. Minimum stock dimensions for jointer.
South Bend Tools
For Machines Mfd. Since 10/20
Model SB1091
-23-
O P E R A T I O N
Stock Inspection &
Requirements
Follow these rules when choosing and
jointing stock:
•
DO NOT joint or surface plane stock that
contains large or loose knots.
Injury to the
operator or damage to the workpiece can
occur if a knot becomes dislodged during the
cutting operation.
•
DO NOT joint or surface plane against the
grain direction.
Cutting against the grain
increases the likelihood of kickback, as well
as tear-out on the workpiece.
•
Jointing and surface planing with the grain
produces a better finish and is safer for the
operator.
Cutting with the grain is described
as feeding the stock on the jointer so the grain
points down and toward you as viewed on the
edge of the stock (see
Figure
below).
Note:
If the grain changes direction along the
edge of the board, decrease the cutting depth
and make additional passes.
•
Only cut natural wood.
This jointer is only
designed for cutting natural wood stock.
Never use it to cut MDF, particle board,
plywood, laminates, drywall, backer board,
metals, glass, stone, tile, products with lead-
based paint, or products that contain asbestos.
Cutting these may lead to injury or machine
damage.
•
Scrape all glue off the workpiece before
jointing.
Glue deposits on the workpiece,
hard or soft, will gum up the cutterhead and
produce poor results.
•
Remove foreign objects from the workpiece.
Make sure that any stock you process with
the jointer is clean and free of dirt, nails,
staples, tiny rocks or any other foreign
objects that could damage the cutterhead.
These particles could also cause a spark as
they strike the cutterhead and create a fire
hazard.
IMPORTANT:
Wood stacked on a concrete or
dirt surface can have small pieces of concrete
or stone pressed into the surface.
•
Make sure all stock is sufficiently dried
before jointing.
Wood with a moisture
content over 20% will cause unnecessary
wear on the cutters and poor cutting results.
Excess moisture can also hasten rust and
corrosion.
Edge Jointing
Surface Planing
Содержание SB1091
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