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Model G0634X (Mfd. Since 11/20)
Figure 24.
Minimum dimensions for edge jointing
and surface planing (jointer).
1
⁄
4
" Min.
3
⁄
4
"
Min.
12" Min.
12" Min.
1
⁄
2
"
Min.
1" Min.
Jointer-Specific Rules:
• Always joint with cupped side of workpiece
facing down, otherwise workpiece could rock
during cut, increasing likelihood of kickback.
• Make sure workpiece exceeds minimum
dimension requirements (see Figures 24–25)
before edge jointing or surface planing, or it
may break or kick back during operation!
Figure 25.
Minimum dimensions for surface
planing (thickness planer).
1
⁄
4
" Min.
1" Min.
12" Min.
Wood Types
Figure 26.
Janka Hardness Rating for some
common wood species.
The species of wood, as well as its condition,
greatly affects the depth of cut the jointer/planer
can effectively take with each pass.
The chart in the figure below shows the Janka
Hardness Rating for a number of commonly
used species. The larger the number, the harder
the workpiece, and the less material should be
removed in any one pass for good results.
Note: The Janka Hardness Rating is expressed in
pounds of force required to embed a 0.444" steel
ball into the surface of the wood to a depth equal
to half the ball's diameter.
Species
Janka
Hardness
Ebony
3220
Red Mahogany
2697
Rosewood
1780
Red Pine
1630
Sugar Maple
1450
White Oak
1360
White Ash
1320
American Beech
1300
Red Oak
1290
Black Walnut
1010
Teak
1000
Black Cherry
950
Cedar
900
Sycamore
770
Douglas Fir
660
Chestnut
540
Hemlock
500
White Pine
420
Basswood
410
Eastern White Pine
380
Balsa
100
Thickness Planer-Specific Rules:
• Use full width of planer. Alternate between
left, right, and middle when feeding narrower
lumber into planer. Inserts will remain sharp
much longer.
Содержание G0634X
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