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Machinery and Tools

The Machinery and Tools category covers questions regarding hand tools, power tools, workshop machinery (such as lathes, milling machines, etc), welding and cutting tools and equipment, measuring instruments, earth-moving machinery, furnaces, factory and industrial machinery.

1,597 Questions

Is there a backup wrench made for castellated nuts?

No, they are made for use with regular or box wrenches. In over 40 years of working t=with them,I've never seen any 'backup wrench' and can't even think why you would want one.

What does a cross cut saw look like?

Is usually about 30 inches long, tapering from about 6" high at the handle to 2" at the point. Teeth are usually about 1/8 deep and 6-8 to the inch.

Can a screwdriver be used as a wedge?

It can, but this is a mis-use of the tool and can bend it. Better to use a wood or metal shim wedge. Available cheap in all good tool stores.

How does the pneumatic nail gun work?

The gun is permanently charged with air, when you push the foot in and pull the trigger air is released to the piston which strikes down to eject the nail and then returns to 'load 'position. If the gun is operating properly, the foot (where the nail comes out) MUST be depressed against a solid object to release the trigger. -Always remember to put a drop or two of air tool oil in the air entry every hundred shots or so.

-BE SAFE Never point an air nail gun at anyone !

What is gross safe bearing capacity?

Gross SBC means, adding additional soil bearing capacity with net bearing capacity. This additional bearing capacity density of filling material above the footing. For example Net SBC=10T/sqm,

Depth of foundation 1.5m.

Refilling soil density 18KN/Cum.

Gross SBC=100+1.5x18=127KN/Sqm or 12.7T/Sqm at 1.5m depth.

Why was the Chinese jump rope made?

Because the jendi war in 1472 there was a bridge and the other side was with the udil they shook the rope and a bunch of rocks hit the udil and they swing onto it they won the battle in Jan 1589 and they gave£87.90 everyone was in peace that's why comment on this plz

What is the most common drilling machine?

The hand held electric VSR drill is the most common drilling machine.

Is a vsr drill a hammer drill?

No a VSR is not a hammer drill. VSR means Variable Speed Reversing. This is because in the old days most electric hand drills ran at a fixed speed and often could not reverse. -A hammer drill has a much more complex transmission than a standard drill, and is much more expensive.

What materials are used to make a Phillips screwdriver?

A phillips screwdriver is generally made of a steel shaft with a plastic handle

How does a Phillip screwdriver help you?

A phillips screwdriver helps you by getting more grip on a screw than a flat blade can.

What is the purpose of the standard screwdriver?

The purpose of a standard screwdriver is to turn screws so they go into or come out of the work.

What is magnification 30X in theodolite?

This means the telescope component brings things visually 30 times closer. Many theodolites used by various government agencies used to be pro-rated at 25X more than adequate for most tasks including trackint weather balloons- this being called a Pibal ( Pilot-Balloon) theodolite. the term pilot is somewhat misleading, as it is not a manned and controlled ( hence piloted) vehicle but an unmanned balloon that, of course follows the wind currents aloft- and moves at the same rate and direction! These instruments, while rivalled by more modern gadgetry- are still used by the Weather bureau and particularily at airports and similar sites where wind functions are important to safe operation of aircraft. I understand some modern Theodolites are l00X ( for building surveying work)- but this might be a misunderstanding with the standard Focus of l00 feet- like the various fixed focusing stops on a camera. all theodolites have adjustable focusing, in part to adapt the instrument to different lightint conditions brought about by- you guessed it, the weather ( more sophisticated one might say diminution of light caused by atmospheric refraction, switch up the lens power!

What company manufactures stihl chain saws?

The Stihl company, Headquartered in Germany makes all Stihl tools,including chainsaws.

What are the basic tools and equipments in metal-works and their uses?

Metals are so useful that we need to know more about them and the tools that are used to shape, cut, form, and finish them. The following are the basic tools and equipment used in doing metalworks:

1. Straightedge. A steel rule used to test the flatness of a workpiece. The edge of the steel rule is placed on the surface of a material and then held up against the light.

2. Outside caliper. This is used to measure the outside dimensions of either a flat or round stock. It may also be used to check the parallelism of surfaces. The setting on the outside caliper may be converted into linear units by measuring the opening with a steel rule.

3. Inside caliper. This is used to measure the diameter of holes or widths of keyways and slots. To convert the inside caliper's opening into linear units, use a steel rule in the same manner as that of the outside caliper.

4. Hermaphrodite caliper. This consists of two legs, one is like that of a divider and the other one is like the leg of an inside caliper. Hermaphrodite calipers may be used to scribe arcs or in marking layout work.

5. Try-square. This consists of a thick beam sometimes called the stock and a thin blade set at 90° angle. This tool is commonly used to test or "try" the accuracy of work. Many try-squares are gradated on the blade so it may also be used as a rule.

6. Divider. This is similar in construction to calipers except that the legs are straight and terminates in sharp points. These are used for measuring distances between points, transferring measurement from a scale, and scribing circles and arc.s

7. Tape rule. This comes in different lengths but commonly in two metre lengths. They are useful in measuring large dimensions such as lengths of metal bars and width of iron sheets. The flexible metal tape rule is housed into a small metal receptacle and can be pulled out when needed.

8. Vernier caliper. This is a device which measures dimensions more accurately than most other measuring tools and is commonly used in machine shop work.

9. Micrometer. This is used to measure very small dimensions. It may be used to determine the thickness of a a shim or the diameter of a single hair strand.

10. Layout table. This is actually made of granite or cast iron. Granites are considered better than cast iron but are very expensive. For very simple layout work, any plain surface such as an ordinary table top will do.

11. Scribers. These are generally used with a straight edge rule to draw straight lines. These are made of hardened steel and sharpened to a very sharp point. On some scribers, one end is bent to allow marking line in hard-to-reach places.

12. Layout punch. Also commonly known as prick punch. It looks a center punch except that the point is ground to an angle of 30° to 60° and is used to permanently mark the location of layout lines.

13. Center punch. Is practically the same as the prick punch except that the point is ground to an angle of 90°. It is used to mark the location of the centers of holes. The wider the angle of indentation permits a drill bit to start holes accurately.

14. Bench vise. This is the most commonly used tool in benchwork to securel hold small work for sawing, chipping, drilling, reaming, polishing, and tapping operations. Vises are made of heavy cast iron or cast steel. Their sizes are determined by the width of the jaws. When gripping highly polished work or soft materials, jaw caps are used to prevent the work surface from getting marred or damaged. Jaw caps are made of plastic, lead, aluminum, or copper.

15. Hammer. The most commonly used in benchwork are the ballpen, straight peen, and crosspeen hammers. Aside form the three, soft-faced hammers are also extensively used in metalwork. These are used in assembling or disassembling parts so the finished surfaces would not be dented. The faces of soft hammers are made of lead, plastic, rawhide, wood, or copper. These are attached to a steel handle and are generally replaceable.

16. Screwdriver. Instruments designed to drive in and take out screws. The two most common types used in the shop are the standard screwdrivers with a flat blade, and the Philips screwdriver with the crossed tip to fit the recessess of a Philip-head screw. Both of these types are manufactured in various sizes and styles such as the standard, stubby, and offset. An important rule to remember in the use of screwdrivers is to use the right size for the right screw. Too big a size damages the slot of the screw and may even cause the screw to break. Too small a size will dent the screwdriver and also damage the slot of Philips screws.

17. Wrench. Different types of wrenches are used for specific purposes. The name of a wrench is generally derived from its use, shape, or construction. The more common types are as follows:

a. Open end wrench. May be single-ended or double-ended. The opening is generally offset at 150° to permit turning the nut or bolt in a crowded space by flooping or inverting the wrench every single stroke. The double-ended wrench is usually of two opening sizes to accomodate two bolt heads or nut sizes.

b. Box wrench. Is also called the box-end 12 point wrench. This wrench completely surrounds the nut and has 12 equally spaced notches inside. A small rotation of a nut can be affected by shifting the wrench to another notch. It can move as little as 1/12 of a circle or 30°.

c. Socket wrench. Similar to the box wrench but is driven differently by means of a handle provided with a square head which fits on the top end of the socket wrench. The handles may be a rachet or when certain bolts or nuts have to be tightened to a correct degree, a torque handle is used.

d. Adjustable wrench. This has an opening which may be adjusted within a certain range to fit several sizes of nuts or bolt heads. This is particularly useful to repairmen who travel to do servicing jobs, eliminating the need to carry too heavy a load of wrenches. For shopwork, however, this type is not preferable since slippage is more likely to happen if proper adjustments to the bolt head is not attained.

e. Allen wrenches. These are hexagonal L-shaped rods that fit into the slots of allen set screws.

18. Pliers. Are designed for gripping and holding small parts for certain machining operations. They are also modified levers so one can "multiply" gripping pressure with the use of these tools. The different types of pliers are:

a. Slip-joint pliers. Are designed to grip small and big stocks by simply slipping the fulcrum.

b. Side-cutting pliers. These are used mainly for gripping, bending, and cutting small diameter rods or wire. When this pliers is provided with insulated handles, it is also called the electrician's pliers.

c. Long-nose pliers. These are manufactured either straight or bent. They are usedd for holding very small parts and for positioning in hard-to-get-at places. They are also very useful in making small loops or rings out of wires. This is sometimes called needle-nose pliers. The bent kind is also known as crooked-nose pliers.

d. Diagonal-cutting pliers. Or simply diagonals are useful in cutting, picking up, or putting cotter pins.

e. Vise grip pliers. Provide an extremely strong grip because of the adjustable lever action. The grip pliers can be locked.

19. File. Is a hand cutting tool made of high carboon steel having a series of teeth cut on a flat body or face. The parts of a file are as shown below. Files without handles should not be used. Files are classified according to how the teeth are cut on the face. They may be single cut or double cut. According to the coarseness or size of the cut they are classified as: rough, coarse, bastard, second cut, smooth cut, and dead smooth. According to cross sectional shapes, files are classified as: flat, half-round, square, three-square (triangle), and knife.

20. Hacksaw. This is used in cutting metals and other materials like fiber and plastics. It is composed of a handle, a frame, and a blade.

21. Scraper. This is used to produce a surface more true that can be produced by machining. Scraping is a process of removing small amounts of metal from specific areas to produce an accurate surface. It is a long and tedious process. Scrapers are made of high grade hardened, and tempered tool steel. Carbides are sometimes added to the tips to make them last longer.

22. Chisel. Is the simplest form of cutting tool. It is made of heat-treated steel with the cutting edge shaped differently for various chipping requirements. The following are the most commonly used chisels in the metalworks shop:

a. Flat chisel. Is used for cutting and chipping metals and for splitting nuts, bolt heads, and rivets. The blade of the flat chisel is ground to an angle of 60° to 70°.

b. Diamond-point chisel. Is used for clearing out corners or correcting errors while drilling in steel plates. It is ground to a square cross section end and provided with a cutting edge at one corner.

c. Cape chisel. Has a narrow cutting edge and is used in cutting narrow grooves, splints, or keyways.

d. Round nose chisel. The tip of this chisel is round and is used in making half round grooves and channels. It may also be used for moving holes which have been inaccurately started.

These are called cold chisels because they are designed to cut metals at room temperature. There are special chisels described as hot chisels which are used to cut or chip while the metal being worked on is red hot. These chisels are provided with a long handle to keep the operator's hand away from the hot metal.

23. Snips. Are tools necessary in the metalworks shop especially when working with metal sheets that are very thin (1/16 of an inch thick). The snips are generally called tinner snips as these are the main tools of a tinsmith. The different types of snips are:

a. Straight snip. Is used in cutting along a straight line on a metal sheet, plastic, rubber, and other materials. They are made in various sizes with cutting edges from two to five inches long. The handles are generally plastic coated.

b. Hawk-bill snip. Has narrow, slightly curved blades. It may also be used to cut a straight edge but is most effective in cutting along inside curves.

c. Aviation snip. Has short cutting blades and two fulcrums for a greater mechanical advantage. It may be used for cutting straight edges or curves but is most effective in cutting long outside curves.

24. Hand drills. Are tools used for drilling small holes through metals, wood, or plastic. It consists of a shank which is attached to a toothed wheel with a handle. The toothed wheel or gear turns another toothed wheel and carries the shaft which holds the chuck and the drill bit.

25. Twist drill. This is a cutting tool consisting of a steel rod with two flutes running around its body, the point of which is ground so that cutting edges are formed. Twist drills are manufactured from forged steel. They are available in available in a variety of sizes from a small as 1/32 to as big as two inches in diameter. They are made with neither a straight or tapered shanks. Small twist drills are generally straight while the bigger ones tapered.

26. Reamer. Is made of special steel with shallow cutting edges around its entire length. It is used to smoothen the surface of the hole made by a drill to finish it to a standard size.

What does her rope she mean?

Nothing at all that I can tell. It's not even proper English. I suggest asking the person you heard say it what exactly they were saying.