Where would you buy carbon nanotubes?

AI Thread Summary
Carbon nanotubes are sought for projects, with cheaptubes.com mentioned as a potential supplier. However, there are significant safety concerns regarding their handling, as they can pose serious health risks similar to asbestos. One user shared that their previous company banned carbon nanotubes from research due to these dangers. Despite the risks, carbon nanotubes have intriguing properties that may be beneficial for certain applications. Caution is advised when working with these materials.
lostminty
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Wouldn't have to be long ones. Cheap and cheerful amounts.

A google search brought up one called cheaptubes.com, anyone had experience with them?
 
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Nasty little beasties, those things. Must be handled with great care, else the result is the unleashing of Satan's private little version of asbestosis-from-Hell. My previous company banned them from any research because of how dangerous they are. But they do present some interesting properties. If you can survive the discovery process, Madame Curie.

I was working with this company to get some until I was told about the prohibition policy:

http://hyperioncatalysis.com/
 
I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
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