Jointer
jointer
A jointer consists of a flat, adjustable table and a cutting head with rotating blades or knives. The table is typically made of cast iron or steel and has an infeed and outfeed section. The cutting head is positioned between these sections and contains multiple sharp blades or knives that rotate rapidly.
The primary function of a jointer is to straighten and flatten the face and edges of wooden boards, ensuring they are square and free from any twists, warps, or irregularities.
Jointers are widely used in woodworking projects where precise edges and flat surfaces are required. They are particularly useful in tasks such as preparing wood for joinery, creating seamless glue joints, and ensuring accurate dimensions for woodworking projects like furniture, cabinetry, and moldings.
In summary, a jointer is a woodworking machine that utilizes rotating blades or knives to flatten and straighten the faces and edges of wooden boards. By removing irregularities, a jointer ensures that the boards are flat, smooth, and ready for further processing, resulting in high-quality woodwork with precise dimensions and seamless joints.
pre-operation checklist
Level 1 - Performance Standards:
Verifies tool is properly guarded.
Confirms blade is installed securely.
Verifies clamping guard extends and retracts properly.
Confirms tables are level and square to fence.
Ensures fence is free of obstructions in both directions.
Verifies ample cleareance for material movement in both directions.
Level 2 - Performance Standards:
Sets and calibrates stops.
Verifies and adjusts scales, ensuring they are properly calibrated.
Verifies or replenishes in-line lubricant (if equipped).
Meets Level 1 performance standards.
safety considerations
Safety Considerations:
Pre-Operation Checklist is a prerequisite for ANY operation.
Demonstrates knowledge and proper use of all machine specific controls.
Stock is properly supported.
Blade is completely retracted and cover raised and stopped before moving cut stock.
Proper stance, foot and hand position are demonstrated.
Stock is pressed securely against the fence, jig or fixture as appropriate.
Hands are removed and clear before pressing the foot pedal to actuate the cutting cycle.
Fall off is not allowed to clutter the work area.
Clears machine and cleans work area after operation.
Required OSHA approved personal protective equipment is worn.
Lock-out/Tag-out procedure is in place and followed.
Process is completed in a timely manner.
OPERATION CHECKLIST
Level 1 Standard:
Given material and saw set up and ready to operate, crosscut material to a given length at 90°.
Level 1 Checklist:
Dimension tolerance is +/- 1/64" (0.4 mm)
Angle of crosscut is 90° to the edge
Cut surfaces exhibit uniform saw marks without burning or defects.
Cut is free of tear-out.
Level 2 Standard:
Select material and set up saw to crosscut material to a given length at 90°.
Level 2 Checklist:
Selects and installs appropriate blade.
Sets stops to achieve consistent given length.
Meets Level 1 performance standards.
