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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

What is a loop at the end of a rope?

It could be a hangman's noose, a bowline, a bowline on a bight, a double bowline, an overhand bight, or any number of other knots.

What does a 14mm socket wrench look like?

14 mm is about .551 inches. So a 14-mm socket wrench looks like a 1/2-inch socket wrench, just slightly larger.

Just in case you are unfamiliar with socket wrenches in general, they come in many forms. Please see the link.

What is the Japanese rope?

If you're referring to the braided rope found at sacred sites such as Shinto shrines, this rope is called 'shimenawa.'

What is steady heat flow?

In most realistic situations heat flow can be said to occur from a region of higher temperature to one of lower temperature. As the region of higher temperature loses heat and the other region gains heat their temperatures become closer and the rate of heat flow diminishes.

If, however, it can be contrived to maintain the source of heat at a constant temperature and the destination of the heat also at a constant temperature, then the heat will flow between the two at a constant rate, called steady heat flow.

What is the use of channel lock pliers?

Channel lock pliers are very versatile. My main use of them is for holding large and awkwardly sized objects, for instance, clearance trap nuts under sinks.

How do you make a pitcher of screwdriver cocktails?

Since I don't know the volume of the pitcher I can't advise concerning volumes. Please see the link.

Which material used to make a lathe bed?

Cast iron is used as the "material of choice" for many machinery housings or bases because it is extremely stable in its structure. Certainly it is subject to thermal expansion and contraction, but the crystal structure of cast iron makes it "hold its shape" in applications ranging from machines and machine parts to cookware. And in things like a lathe bed, we need the thing to be "the same" every day and all the time so we get accurate, consistent work. Cast iron also suppresses high frequencies generated during machining.

Note that the ways (the parts of the bed that the carriage slides on), are hardened and machined to provide lasting and accurate surfaces.

What is a crescent wrench used on?

A crescent wrench is very handy to have when you are working in a confined space or other places you cannot haul a whole toolbox into. -I have 4 different and use them for things I've never worked on before, with unknown bolt sizes. They are very handy, but not to be used on 'torqued' bolt heads in case you 'round' the edges of the bolt (unfortunately a very common error for amateurs)

What is the function of plain straight plier?

This is used to hold small pieces and to twist wires, as in electrical wires when joining two wires that need three equal twists.

What geometry the hole of a Allen wrench?

The hole, which is six sided, is actually in the head of the Allen screw or bolt, NOT in the wrench. The Allen wrench is a six sided tool steel bar made to very precise measurements and often, but not always, bent at a right angle at one end. Professional Allen wrenches almost always have a large 'T' handle to use as a grip, and are about 7-9 inches long, as opposed to the smaller ones you find in hardware stores. The Allen wrench principle is to allow more torque on the screw or bolt. Many mechanics even have an entire set of Allen bits to fit on their torque wrench.

Variations on the well known Allen head, (which has been around since 1912) are the modern Torx screw and the Bristol screw (much used in British aircraft industry) - All of these have a similar shape and a common principle of allowing more torque to be applied, and avoiding what is called 'cam out'.

Is being a CNC machinist hard?

A CNC machinist does not exist. The following are the positions regarding CNC machine tools.

  • CNC Programmer
  • CNC Setter
  • CNC Operator

CNC Programmer - This is the hard part. Usually, a CNC programmer is a qualified or experienced machinist or turner. One has to understand the principals of machining to be able to write a program for machining on a CNC machine tool.

CNC Setter - The CNC Setter is the person who would get the program from the programmer and install it on the CNC. Her would then set the machine up and get it ready for operation. The setter also needs a good background in machining or turning.

CNC Operator - This is the easiest part of the job and only a good understanding of measuring instruments are necessary.

The programmer probably has the hardest part of the job. The setter second and the operator the easiest. Despite having the easiest part of the job, the operator's importance to the operation is significant. He is the first person to identify incorrect dimensions of the machined component. He has to notify the setter or QC inspector if the machined workpiece is out of spec. If he fails to do so, a batch of scrap components could be produced wasting a lot of time and money. Usually, depending on the size, complexity and cost of the machined component, the operator has to take one out of every specified amount to the QC inspector for precise measuring to confirm its conformity to the drawing.

In many instances, the programmer is the setter too. In others, the setter is the operator. There are instances where the programmer does the programming, setting, and is the operator of the machine.

What kinds of cuts can you make with a drill press?

You can drill very accurate sized holes,

you can drill very large holes with the use of hole saws,

you can drill many identically placed holes, with use of jigs

you can drill holes in many sheets of thin materials if clamped together,

you can drill large holes in very thin materials with use of a fly cutter,

you can drill holes to a precise depth with Forstner bits.

you can mill things flat with milling bits

and many more things - a drill press is a very versatile machine

What is the least count of vernier theodolite?

Varies according to instrument. There are differing scales and degrees of precision. Look up any catalog on surveying instruments and you will get some information, maybe more than you need, but you will get an idea. There are all different types, some heavily electronic

What size drill bit do you use for 6mm?

I use 6mm for 6mm, but if you don't have a metric set, 1/4 inch is only very slightly bigger.

How much dose a chisel cost?

Chisels vary widely in cost and quality. A simple homeowner chisel could be $10-12 whereas a pro woodworker may pay up to $40 for the same size chisel.

Which lathe chuck can hold the most difficult workpiece shapes?

The 4-Jaw independent chuck. Due to its independent jaws it can grip the most complex shapes.

3-Jaw and 4-Jaw self centering chucks are only capable of gripping cylindrical and hexagonal (3-Jaw self-centering) or cylindrical, square and octagonal (4-Jaw self-centering) shapes.