ZOHER  HARDWARE

Nowadays, if I meet younger people who run machine shops, they're working there because it
was their father's machine shop. You don't see a lot of young guys starting machine shops.
But it's a respectable trade and there's still a lot of money to be made. Take the guy who used
to be in the building next to mine. He made airplane parts and his business got so big he outgrew
the space. This was a guy with a little machine shop with a bunch of machinists. He made $14
million the year he left. I'll tell you how he did it.  There are tons of phony airplane parts
coming from Asia and other sources that are stamped "Approved." Trouble is, they're not approved
by anyone that matters. So the big airlines would come there and say, "We need 600 titanium bolts."
Then they would have to have somebody stand there while the guy made the bolts out of titanium.
So the work never got out of the airlines' hands. When the bolts were done, they were stamped,
graded and delivered. You have to understand that some critical aircraft bolts are 4 grand apiece,
because the o­nly way you can ensure that the bolts are being made right-there's such a black
market for counterfeiting aircraft parts-is to pay a trustworthy man to watch each and every
part being machined. That's why they're so expensive. So bolt by bolt, this guy's a millionaire.
What a difference from years past. In the old days technology was expensive and labor was cheap.
Look at my 8.0-liter Bentley. You've got about 75 acorn nuts holding the water jacket o­n. When
this car was built you could pay a guy 10 cents an hour to sit there all day and tighten acorn nuts.
Now it's just the opposite: Labor's expensive and technology is incredibly cheap. It's odd, but
I'm not simply talking about physical labor today. I'm talking about people with real skills. 	
I watched "Dateline NBC" a while back and they had some guy o­n who was a math genius. You could
throw him a column of figures and he could add them up quicker than you could o­n a computer. There
are guys like that with machinery, guys who can just look at an engine and know all there is to
know about it.







 Take the late Harry Miller, a real American...

     Larger suburban lawns have generated a host of time-saving tools that, while making lawns neat and clean, fill the air with noise-audible litter-as well as other air pollutants. Most lawn equipment is so loud that the operator ought to be wearing earplugs to prevent hearing loss. The result is that o­n any given summer night, the drone of lawn equipment disturbs the peace. And in neighborhoods frequented by lawn services, the days can be filled with constant noise.

     Increasingly, citizens are trying to turn off the din of lawn equipment. Many people are realizing that it makes no sense to create the "perfect" landscape by polluting the soundscape. Fortunately, we can turn off the din without turning off the time-saving lawn equipment.

A QUIETER FUTURE
     The Noise Pollution Clearinghouse has tested more than 40 pieces of lawn equipment for noise. Consumer Reports has tested most of these for quality.

     Together these two sources should allow consumers to purchase high quality and quieter lawn equipment. Eventually, market forces and publicity will spur manufacturers to build better, quieter lawn equipment.

     The change will not happen overnight. The average life of the more than 34 million mowers, 14 million riding mowers and 16 million trimmers in the United States right now is seven years. By 2011, most of today's stock will be in the recycle heap. There is a tremendous opportunity over the coming years to dramatically reshape our neighborhood soundscapes by reshaping the lawn and garden marketplace. NPC is working hard to publicize our findings and is committed to years of testing to ensure that the transition to quieter lawn equipment occurs. In 10 years, summer evenings in neighborhoods could be much more peaceful.

     Currently, the quietest equipment available tends to be hand powered or electric...

Grinding has many different applications in the machine tool industry. The grinding operation can be performed o­n a variety of machines such as the lathe and the mill - with the appropriate add-on accessories. However this topic will focus primarily o­n surface grinding, cylindrical grinding, and universal grinding machines.

In the simplest systems of die casting, molten metal is poured into the mould and allowed to solidify. The die is then opened, the casting removed and the die re-closed to receive more molten metal to start the cycle over again. Often the die is set into a machine and the whole process is controlled automatically, including the addition of molten metal.

1. A ’die’ is made by machining an accurately shaped cavity in a block of heat resisting metal. The die is in two halves so that the finished casting can be removed	2. The die also has a hole and channels through which the metal flows. It may have various rods and pegs to form internal holes in the casting
3. The parts of the die are clamped together and molten metal poured in	4. The die is opened and the casting removed. The casting is the finished size and shape except for the extra pieces where the molten metal was poured in

Angle grinders used with cutting discs expose workers to a range of severe additional hazards. Safe work procedures should ensure that, wherever a safer alternative cutting tool is available or can be obtained, an angle grinder is not used as a cutting tool.

DID YOU KNOW?

Angle grinders are o­ne of the most dangerous hand tools in the manufacturing metal products industry.

Kickback, where the disc is thrust away from the object it is grinding, can result in severe cuts to hands, arms, head, torso and legs.

Discs can shatter or explode, sending pieces flying across the workshop. A boilermaker was thrown backwards more than 2 metres when a disc exploded, seriously injuring his hand.

Most angle grinder injuries are from metal particles...

             2. You can't usually tell if a motor needs rewinding by looking at it.
             Many Flyer motor windings that appear to show signs of burning actually
             work quite well.

             4. Motors need to be rewound for two reasons: because excess heat has
             damaged the insulation so that electricity passes from winding to winding
             without going thru them all, or else because the winding has been cut in a
             place that is not near the end of the coil. 

             5. Determining if a motor needs to be rewound requires some special
             equipment - an AC ammeter and a 1 volt AC power source. I don't know how
             to do it.

             6. You can get some indication of the situation sometimes using a VOM.  No
             continuity between field coil terminals or commutator poles means a broken
             winding. Often the break can be located visually or by unwinding a turn or
             two of the broken coil. If the break is near the end, the loss of a few
             windings will not have much effect. There are three possible pairings of
             the three commutator plates. If a resistance reading between any two
             plates is different than between the other two possible pairs of plates, it
             is an indication that o­ne coil of the armature