Grizzly G0634Z insert, Manual

Page: 45 / 92

Model G0634Z/G0634XP (Mfd. Since 01/20)
-31-
Figure 29.
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 your workpiece exceeds the mini-
mum dimension requirements (see
Figures
29
&
30
) before edge jointing or surface plan-
ing, or it may break or kick back during the
operation!
Thickness Planer-Specific Rules:
• Use the full width of the planer. Alternate
between the left, the right, and the middle
when feeding narrower lumber into the planer.
Your knives will remain sharp much longer.
Figure 30.
Minimum dimensions for surface
planing (thickness planer).
1
⁄
4
" Min.
1" Min.
12" Min.
Wood Types
Figure 31.
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