I'll second bioengr82's response.
Only thing I would add at this point is be professional and polite even when jabbing back at someone whom you are perceiving as an idiot.
While I like the quote I no longer believe it is true.
I have come to believe that some of the best Engineers are not pessimists or optimists. I believe the best Engineers are the ones who start a project as a pessimist and figure out how to become an optimist before day 2.
The trick is to...
Born in '71 - have three slide rules. Little rusty but I can use them.
Micrometers are daily and I know enough to know that I use Calipers with a vernier scale on them. I do NOT use verniers and do not acknowledge they exist.
Calipers can be used as well as Vernier Scales. I am still trying...
Without changing jobs I have never seen a raise above 3% with the exception of when I got my PE which gave me a 4% raise.
I have mostly had excellent reviews but the economics with the companies I worked for did not justify larger raises than 3%.
The year I received my best review was the year...
Ok so lets think from a functional point of view.
I'll take a plate and create the hole pattern and relate all positions to a bolt circle diameter center. All hole true positions are to the bolt circle diameter center.
My datum A is one side of the plate. Datum B is the center of the bolt...
Here sums up where I see the issue. If you remove bolt 4 can you truly assume the system is still static? In the above statement that is you are assuming that the system is still static.
In this case where the system is static AFTER the 4th bolt has been removed (and you have done something...
In my limited experience ...
If you have bolts which are holding a plate in place creating a shelf scenario then the third bolt should have some sort of compressive force on it as the center of support is not in line with the center of mass. You have a triangle supporting a square and all your...
You know as we argue about motgages and how much milk is in the corner store I think that the persepective we HAVE to take is - Is a corporation going to see the value in paying $50 an hour (which would be a really nice raise for me especially if that was American $) when they can use an...
You need to resolve it at both OD and ID looking at the frictional coefficients at both points (unless either is keyed). The weaker joint will lose its grip first. (Either the bushing will spin on the shaft or the bushing will spin in the housing.)
Basically though you are correct with the...
The only person you can truly blame for outsourcing is yourself - the consumer.
If you were willing to pay top dollar for the products made in America so that companies would have what they felt to be the desired profit return there wouldn't be a need to outsource.
Buy products made in America...
There are a number of reasons. The first and strongest is cost. In an automotive aftermarket environment a single rotor would probably cost over $200US. The average person would not see a significant benefit to justify the cost.
The second reason - pads to match up with the rotors are...
The MMC rotors had a really high heat capacity. That was one of the Engineering specs that drove the concept.
As I recall from 6 years ago, under similar braking conditions MMC would only reach about 2/3 of the temperature a cast iron rotor would see. This was due to the better heat capacity...
What I am driving at is that there is solid justifcation to use GD&T for some applications. The only way to make a good part is to apply the right specification in the best language. One of the interesting points from the above story is that they eliminated the problem by changing the system...
The Aluminum MMC discs weighed about the same (and were solid) and were significantly cheaper than carbon/ceramic. They didn't have too much of a problem with heat. The composite did a woderful job of increasing heat capacity as well as wear resistance and the aluminum worked well with the...
Because they may not make a good part.
One of the major problems with bilateral tolerancing is it is common to create aggregate errors which cause complex systems to not line up. Ask Pratt and Whitney. They ran into this hard about 20 years ago when my dad was working there.
Imagine a 20...
