For use upon machinery in a wood shop or any industrial facility where it is desired to operate upon an object's unmarked centerline, such as with a powered saw table, drill press or any other apparatus required for the task: The sine and cosine of a triangle—are used to assure that as a certain component is moved a given distance, a guide fence is moved transversely just a fraction of that distance—preferably one-half—away from or toward the task performing instrument—a saw blade, drill bit or other operable tool. Thus, if the distance moved by the component equals the width of the piece to be worked upon, where the trigonometric sine is such that the guide fence is moved half that distance, given certain further adjustment, the task performing instrument is caused to operate precisely upon the piece's centerline, represented by one-half its width.

A two-part pivotable block component for mounting interposed a piece of industrial equipment and its mounting base. The two-part pivotable block component comprises an upper first part that is engageable with the base of the industrial equipment, and a lower second part that is engageable with a mount for the industrial equipment. The first part of the pivotable block component has an inclined surface in a first plane for pivotably engaging an inclined surface provided therefore on the second part of the pivotable block component. The inclined surface of the second part of the pivotable block component is in a second plane. The two-part pivotable block component is suitable for use with industrial equipment exemplified by electrical motors, hydraulic-driven motors, pressure-driven motors, and pumps. The two-part pivotable block component is also suitable for aligning arbors cooperating with industrial equipment.

A saw guide can include pivotally connected arcuate sections having a plurality of slots formed therein to receive and guide saw blades as they cut a workpiece, such as a pipe or tube. The slots are of varying width so that the saw guide can be used with different saws. For example, the saw guide can include a first slot sized to receive and guide the blade of a reciprocating saw, and a relatively narrower second slot, sized to receive the blade of a portable band saw. The saw guide can include a locking mechanism to securely hold the saw guide on the workpiece, and a stopping mechanism for preventing the saw blade from cutting into the saw guide.

In one aspect, a tool support for a pipe machining apparatus includes a support arm defining a groove therein and configured to support a tool, and a guide member at least partially positioned in the groove to allow movement of the support arm in a first direction and inhibit movement of the support arm in a second direction. In one aspect, a tool support includes a one-piece unitarily formed body member defining a cavity there through, and a tool support arm at least partially positioned in the cavity and configured to translate within the cavity. In one aspect, a tool support includes a first translating member configured to translate a tool toward and away from a pipe, and a second translating member configured to translate the tool toward and away from the pipe. The second translating member is coupled to and moveable relative to the first translating member.

A saw guide can include pivotally connected arcuate sections having a plurality of slots formed therein to receive and guide saw blades as they cut a workpiece, such as a pipe or tube. The slots are of varying width so that the saw guide can be used with different saws. For example, the saw guide can include a first slot sized to receive and guide the blade of a reciprocating saw, and a relatively narrower second slot, sized to receive the blade of a portable band saw. The saw guide can include a locking mechanism to securely hold the saw guide on the workpiece, and a stopping mechanism for preventing the saw blade from cutting into the saw guide.

A saw guide can include pivotally connected arcuate sections having a plurality of slots formed therein to receive and guide saw blades as they cut a workpiece, such as a pipe or tube. The slots are of varying width so that the saw guide can be used with different saws. For example, the saw guide can include a first slot sized to receive and guide the blade of a reciprocating saw, and a relatively narrower second slot, sized to receive the blade of a portable band saw. The saw guide can include a locking mechanism to securely hold the saw guide on the workpiece, and a stopping mechanism for preventing the saw blade from cutting into the saw guide.