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Kamis, 15 November 2007

Jointer


In this shop, the first corner of the work triangle is the machining area. One of the most important pieces of equipment in a woodshop is the jointer , a stationary power tool with cutting blades designed to flatten and square wood. Frequently, raw lumber from a lumberyard has rough or imperfect surfaces, and these must be run through the jointer to make them perfectly smooth and flat. Perfectly flat wood surfaces and square corners like this can be butted together to create a joint -- hence the name of this tool.

The jointer is equipped with an adjustable fence as well as a protective guard a safety device designed to keep the user's hands away from the cutting blades. The heights of the blades are adjusted with wheels mounted on the end-feed table. With most jointers, one rotation of the wheel raises or lowers the blade by 1/64".

Since the jointer is frequently the first tool used on raw lumber, it should be positioned close to the lumber rack to avoid having to carry heavy wood across the workspace. In some cases it can be positioned directly below an overhead wood rack or shelving. Since large pieces of wood are passed over the jointer, there should be several feet of clearance on either end of this piece of equipment

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