Sunday, May 15, 2011

GUIDE BLOCK 2

GUIDE BLOCK

A block attached in to the cross-head to work in contact with the guide bar.

CAVITY BLOCK

A precast concrete block that contains a cavity or cavities.

BASE BLOCK

A block of any material, generally with little or no ornament, forming the lowest member of a base, or itself fulfilling the functions of a base, as a member applied to the foot of a door or to window trim. A rectangular block at the base of a casing or column which the baseboard abuts.

STOP BLOCK 2

STOP BLOCK

The stop block is a device used primarily in woodworking (and in metalworking to a lesser extent as well) to ensure that the piece of wood or other material being worked upon is kept a certain, constant distance away from the cutting blade by allowing force to be applied to the material being cut in a direction perfectly parallel to the blade. This cutting device is typically a table saw, although stop blocks can be used with a variety of other machines, including radial arm saws and band saws.

Stop blocks generally run in a track cut into the saw's cutting surface, permitting it to move in only one direction (hence ensuring that all force is applied perfectly parallel to the cutting device, keeping the cut in a constant, straight line).

MODIFIED V BLOCK

A block having a precise V -shaped groove for checking the roundness or concentricity of a machine part or the like, or for holding cylindrical pieces of work.

A square or rectangular steel block having a 90° V groove through the center, and sometimes provided with clamps to secure round work pieces.

 
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