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Originally Posted by Alan Anderson
...I really don't understand your animosity toward this technology.
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As I mentioned before, there are many ways to keep a persons fingers out of a spinning saw blade
better ways, that dont entail what amounts to jamming a monkey wrench into the system to stop it
the problem usually is that users disable the safety features, then they get hurt
so now, here we have this somewhat expensive new system, that the designer is trying to mandate into a government requirement.
That is the source of my animosity. Everything I have learned as an engineer says this whole system is not the way to go.
Also, everything I have read on the way this technology was developed says the inventor did not base his design on the real problem, because he did not work in the power tool industry, so how would he know if the leading cause of injury was equipment failure, blade failure, safety equipment being deliberately disabled by the user, or by the users supervisor, being distracted, not being able to see what you are doing...
Before you can design improvements to make a system better you must first know what the actual problems are, the root cause of failures and accidents. The designer of the MonkeyWrench Jammer was not in the loop, he did not have access, he did this on his own.
This system is a good example of what engineers call the two step, a bad design process:
1. Here is a problem (people get cut on saw blades)
2. Here is the solution (jam a hunk of metal in the blade!)
Why do people get hurt on sawblades? This product does nothing to address the root cause.