SECTION 4: OPERATIONS
Operation Safety |
| Jointer Overview |
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Damage to your eyes, lungs, and ears could result from using this machine without proper protective gear. Always wear safety glasses, a respirator, and hearing protection when operating this machine.
Loose hair and cloth-
ing could get caught in
machinery and cause seri-
ous personal injury. Keep
loose clothing and long
hair away from moving machinery.
Lock the mobile base wheel before operat- ing the jointer! Operating the jointer with the wheel unlocked may cause loss of control and serious personal injury.
NOTICE
If you have never used this type of machine or equipment before, WE STRONGLY REC- OMMEND that you read books, trade maga- zines, or get formal training before begin- ning any projects. Regardless of the con- tent in this section, Grizzly Industrial will not be held liable for accidents caused by lack of training.
G0656 8" Jointer with
A jointer is primarily used to flatten the face or edge of a workpiece, which is required when properly "squaring up" a workpiece for later con- struction or joining multiple pieces with glue. A jointer can also cut bevels, rabbets, and other specialized cuts with various jigs or fixtures.
The primary components of the jointer are the cutterhead, outfeed table, infeed table, and fence. A typical cut on a jointer is made by firmly holding a workpiece against the infeed table and fence, then moving the workpiece over the cutterhead while using the fence as a guide. As the workpiece moves over the cutterhead, the knives make many shallow cuts that "shave" off the surface of the workpiece. After moving over the cutterhead, the workpiece is received by the outfeed table, which along with the fence, continue to guide the workpiece across a flat plane until it completely passes the cutterhead. Since only a small amount of the workpiece is removed during a jointer cut, most jointer cuts are repeated many times to yield a desired result.
In order for the jointer to cut properly, all the knives in the cutterhead must be set at the same height in the cutterhead.
Additionally, the outfeed table must be even with the cutterhead knives at their highest point of rotation to keep the freshly cut portion of the workpiece in the same plane as it was cut, which is what yields a flat workpiece.
The position of the infeed table relative to the outfeed table is what controls the cutting depth. If the infeed table is 1⁄16" lower than the outfeed table, then 1⁄16" of the workpiece will be removed by the cutterhead as the workpiece passes from the infeed table to the outfeed table.
