...ing ends, in a full range of inch and metric sizes. A socket wrench combined with a ratchet wrench makes the job of tightening or loosening nuts and bolts faster and easier than conventional wrenches. Flare net wrenches are flared to fit hex fittings. Hex-key wrenches are short, L-shaped tools designed to turn bolts or screws with hexagonal heads. They also come in sets of different–sized wrenches. Ratchet wrenches are available in 1/4&q...Baca Selengkapnya »
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...nd drills. Attaching a screwdriver bit converts them into powerful screwdrivers. Drilling is done by turning the handle or center section in a circular motion. Pressure for drilling is given by bearing down on the head of the bit brace with the heel and palm of the hand. The head on the best bit braces is mounted on ball bearings so that it will turn freely from the rest of the brace. Most braces incorporate a ratchet control that permits the use...Baca Selengkapnya »
The portable machine tools classified as either cutting took (straight and machine tools, can quickly and easily be moved to the angle hand drills, metal sawing machines, and metal cutting workplace to accomplish machining operations. The accuracy shears) or finishing tools (sanders, grinders, and polishers). of work performed by portable machine tools is dependent upon the user’s skill and experience. Here are some safety precautions to follow...Baca Selengkapnya »
...ns. These tools can be powered by an electric motor or air depending on the model selected. There are two basic types of portable metal cutting shears: The heavy-duty type with the upper movable blade (single – cut) The light-duty type with the scissor action blade (double – cut). Both types of shears work well, but there are slight differences in the operation and capabilities of each. Since these are hand controlled tools, t...Baca Selengkapnya »
...cause rust and mainly affects motor parts such as the cylinder, rotor, vanes and end plates. Debris can lock up tools or cause permanent scarring and pitting of metal parts that will reduce power. There are no seals or gaskets between the cylinder and end plates, so all surfaces must be clean and smooth in order to maintain maximum torque. The best system to eliminate moisture is an air dryer. There are different types of dryers, some must be dr...Baca Selengkapnya »
...keys for greater torque power. Square-tipped (Robertson) screwdrivers have become more common recently because of increased do-it-yourself decking projects. The screwdrivers have a square head and range in sizes from 0 to 3 and jumbo. The square head on the driver helps grip the screw on all four sides to provide maximum torque. Multi-bit screwdrivers allow the user to have a number of different types of tips in one tool. Some products...Baca Selengkapnya »
...pending upon the purpose for which they are to be used. Some micrometers are graduated to measure in thousandths of an inch and others will measure as close as ten thousandths of an inch. Others are metric and measure in hundredths of a millimeter. There are two basic types of micrometers, with two distinct jobs. One is the outside micrometer, used to measure outside dimensions and the other is the inside micrometer, used to measure inside dimens...Baca Selengkapnya »